diff --git a/bin/config_util.py b/bin/config_util.py
index 83d90248..7ac9eff9 100644
--- a/bin/config_util.py
+++ b/bin/config_util.py
@@ -851,3 +851,25 @@ def prompt_with_limits(prompt, default=None, low_limit=None, high_limit=None):
             value = default
 
     return value
+
+def extract_roots(config_path, config_dict):
+    """Get the location of the various root directories used by weewx."""
+    
+    root_dict = {'WEEWX_ROOT' : config_dict['WEEWX_ROOT'],
+                 'CONFIG_ROOT' : os.path.dirname(config_path),
+                 'BIN_ROOT' : config_dict.get('BIN_ROOT')}
+    # If there is no BIN_ROOT in the configuration dictionary, then set it
+    # to the location of this file:
+    if root_dict['BIN_ROOT'] is None:
+        root_dict['BIN_ROOT'] = os.path.dirname(__file__)
+    # The extensions directory can be found off of BIN_ROOT:
+    root_dict['EXT_ROOT'] = os.path.join(root_dict['BIN_ROOT'], 'user', 'installer')
+    # Add SKIN_ROOT if it can be found:
+    try:
+        root_dict['SKIN_ROOT'] = os.path.abspath(os.path.join(root_dict['WEEWX_ROOT'],
+                                                              config_dict['StdReport']['SKIN_ROOT']))
+    except KeyError:
+        pass
+    
+    return root_dict
+    
diff --git a/bin/wee_config b/bin/wee_config
index 4b7adfa8..09c8fbfc 100755
--- a/bin/wee_config
+++ b/bin/wee_config
@@ -16,14 +16,6 @@ import configobj
 import weewx
 import config_util
 
-stn_info_defaults = {'location'     : '',
-                     'latitude'     : '0',
-                     'longitude'    : '0',
-                     'altitude'     : ['0', 'meter'],
-                     'units'        : 'metric',
-                     'station_type' : 'Vantage',
-                     'driver'       : 'weewx.drivers.Vantage'}
-
 usage="""wee_config --help
        wee_config --version
        wee_config --list-drivers
@@ -63,6 +55,10 @@ weewx.conf). Its location can be given as a command-line argument,
 or it can be specified with option --config.
 """
 
+# The default station information:
+stn_info_defaults = {'station_type' : 'Simulator',
+                     'driver'       : 'weewx.drivers.simulator'}
+
 def main():
 
     # Set defaults for the system logger:
@@ -95,7 +91,7 @@ def main():
                       help="Where the results should be written.")
     parser.add_option("--no-prompt", action="store_true",
                       help="Do not issue prompts. Use default values or specified options.")
-    parser.add_option("--driver", metavar="DRIVER", dest="driver",
+    parser.add_option("--driver", metavar="DRIVER",
                       help="Use the driver DRIVER, e.g., weewx.driver.vantage. ")
     parser.add_option("--latitude", metavar="yy.y",
                       help="The station latitude")
diff --git a/bin/wee_extension b/bin/wee_extension
new file mode 100755
index 00000000..f4043a36
--- /dev/null
+++ b/bin/wee_extension
@@ -0,0 +1,112 @@
+#!/usr/bin/env python
+#
+#    Copyright (c) 2009-2015 Tom Keffer <tkeffer@gmail.com> and
+#                            Matthew Wall
+#
+#    See the file LICENSE.txt for your full rights.
+#
+"""Install and remove extensions."""
+from __future__ import with_statement
+
+import os.path
+import optparse
+import sys
+import shutil
+from subprocess import Popen, PIPE
+
+import configobj
+
+import config_util
+
+usage = """wee_extension --help
+       wee_extension --list
+           [CONFIG_FILE|--config=CONFIG_FILE]
+       wee_extension --install=(filename|directory)
+           [CONFIG_FILE|--config=CONFIG_FILE]
+           [--tmpdir==DIR] [--dry-run] [--verbosity=N]
+       wee_extension --uninstall=EXTENSION
+           [CONFIG_FILE|--config=CONFIG_FILE]
+           [--verbosity=N]
+           
+COMMANDS:
+
+--list:      List all installed extensions
+--install:   Install the extension that can be found in the
+             named file or directory.
+--uninstall: Uninstall the given extension."""
+
+description = "This utility can install/remove/list extensions to weewx"
+
+def main():
+    parser = optparse.OptionParser(description=description, usage=usage)
+    parser.add_option('--list', action="store_true", dest="list_extensions", 
+                      help="List all installed extensions")
+    parser.add_option('--install', metavar="filename|directory",
+                      help="Install the driver found in filename or directory")
+    parser.add_option('--uninstall', metavar="EXTENSION",
+                      help="Uninstall the extension with name EXTENSION")
+    parser.add_option("--config", metavar="CONFIG_FILE",
+                      help="Use configuration file CONFIG_FILE.")
+    parser.add_option('--tmpdir', default='/var/tmp',
+                      metavar="DIR", help='Use DIR as the temporary directory')
+    parser.add_option('--bin-root', metavar="BIN_ROOT",
+                      help="Look in BIN_ROOT for Python executables (useful for debugging)")
+    parser.add_option('--dry-run', action='store_true',
+                      help='Print what would happen but do not do it')
+    parser.add_option('--verbosity', type=int, default=1,
+                      metavar="N", help='How much status to spew, 0-3')
+    
+    # Now we are ready to parse the command line:
+    (options, _args) = parser.parse_args()
+
+    ext = Extension(_args, **vars(options))
+    ext.run()
+    return 0
+
+
+class Logger(object):
+    def __init__(self, verbosity=0):
+        self.verbosity = verbosity
+    def log(self, msg, level=0):
+        if self.verbosity >= level:
+            print "%s%s" % ('  ' * (level - 1), msg)
+    def set_verbosity(self, verbosity):
+        self.verbosity = verbosity
+
+class Extension(object):
+    
+    def __init__(self, args=None, list_extensions=None, install=None, uninstall=None, config=None,
+                 tmpdir=None, bin_root=None, dry_run=None, verbosity=None):
+        self.logger = Logger(verbosity)
+        self.list_extensions = list_extensions
+        self.install = install
+        self.uninstall = uninstall
+        self.tmpdir = tmpdir
+        self.dry_run = dry_run
+        self.config_path, self.config_dict = config_util.read_config(config, args)
+        # BIN_ROOT does not normally appear in the configuration dictionary. Set a
+        # default (which could be 'None')
+        self.config_dict.setdefault('BIN_ROOT', bin_root)
+        self.root_dict = config_util.extract_roots(self.config_path, self.config_dict)
+        self.logger.log("root dictionary: %s" % self.root_dict, 1)
+        
+    def run(self):
+        if self.list_extensions:
+            self.enumerate_extensions()
+            
+    def enumerate_extensions(self):
+        ext_root = self.root_dict['EXT_ROOT']
+        try:
+            exts = os.listdir(ext_root)
+            if exts:
+                for f in exts:
+                    self.logger.log(f, level=0)
+            else:
+                self.logger.log("Extension cache is '%s'" % ext_root, level=2)
+                self.logger.log("No extensions installed", level=0)
+        except OSError:
+            self.logger.log("No extension cache '%s'" % ext_root, level=2)
+
+if __name__=="__main__" :
+    main()
+    
diff --git a/bin/weewxd.py b/bin/weewxd.py
deleted file mode 120000
index 0df1e0eb..00000000
--- a/bin/weewxd.py
+++ /dev/null
@@ -1 +0,0 @@
-./weewxd
\ No newline at end of file
diff --git a/bin/weewxd.py b/bin/weewxd.py
new file mode 100755
index 00000000..79b04e5b
--- /dev/null
+++ b/bin/weewxd.py
@@ -0,0 +1,61 @@
+#!/usr/bin/env python
+#
+#    Copyright (c) 2009-2015 Tom Keffer <tkeffer@gmail.com>
+#
+#    See the file LICENSE.txt for your full rights.
+#
+"""Entry point to the weewx weather system."""
+import sys
+from optparse import OptionParser
+
+# First import any user extensions:
+import user.extensions       #@UnusedImport
+# Now the engine
+import weewx.engine
+
+usagestr = """
+  %prog config_path [--daemon] [--pidfile=PIDFILE] [--exit] [--loop-on-init]
+                     [--version] [--help]
+
+  Entry point to the weewx weather program. Can be run directly, or as a daemon
+  by specifying the '--daemon' option.
+
+Arguments:
+    config_path: Path to the weewx configuration file to be used.
+"""
+
+#===============================================================================
+#                       function parseArgs()
+#===============================================================================
+
+def parseArgs():
+    """Parse any command line options."""
+
+    parser = OptionParser(usage=usagestr)
+    parser.add_option("-d", "--daemon",  action="store_true", dest="daemon",  help="Run as a daemon")
+    parser.add_option("-p", "--pidfile", type="string",       dest="pidfile", help="Path to process ID file", default="/var/run/weewx.pid")     
+    parser.add_option("-v", "--version", action="store_true", dest="version", help="Display version number then exit")
+    parser.add_option("-x", "--exit",    action="store_true", dest="exit"   , help="Exit on I/O and database errors instead of restarting")
+    parser.add_option("-r", "--loop-on-init", action="store_true", dest="loop_on_init"  , help="Loop if device is not ready on startup")
+    (options, args) = parser.parse_args()
+    
+    if options.version:
+        print weewx.__version__
+        sys.exit()
+        
+    if len(args) < 1:
+        sys.stderr.write("Missing argument(s).\n")
+        sys.stderr.write(parser.parse_args(["--help"]))
+        sys.exit(weewx.CMD_ERROR)
+    
+    return options, args
+
+#===============================================================================
+#                       Main entry point
+#===============================================================================
+
+# Get the command line options and arguments:
+(options, args) = parseArgs()
+
+# Fire up the engine.
+weewx.engine.main(options, args)