Index: projects/mongrel_service/lib/mongrel_service/init.rb
===================================================================
--- projects/mongrel_service/lib/mongrel_service/init.rb	(revision 298)
+++ projects/mongrel_service/lib/mongrel_service/init.rb	(working copy)
@@ -26,7 +26,8 @@
           ['-B', '--debug', "Enable debugging mode", :@debug, false],
           ['-C', '--config PATH', "Use a config file", :@config_file, nil],
           ['-S', '--script PATH', "Load the given file as an extra config script.", :@config_script, nil],
-          ['-u', '--cpu CPU', "Bind the process to specific cpu, starting from 1.", :@cpu, nil]
+          ['-u', '--cpu CPU', "Bind the process to specific cpu, starting from 1.", :@cpu, nil],
+          ['', '--prefix PATH', "URL prefix for Rails app", :@prefix, nil]
         ]
     end
     
@@ -51,6 +52,7 @@
 
       valid? app_exist == true, "The path you specified isn't a valid Rails application."
 
+      valid? @prefix[-1].chr != "/", "Don't put / at the end of your prefix" if @prefix
       valid_dir? File.dirname(@log_file), "Path to log file not valid: #@log_file"
       valid_dir? File.dirname(@pid_file), "Path to pid file not valid: #@pid_file"
       valid_dir? @docroot, "Path to docroot not valid: #@docroot"
@@ -80,13 +82,13 @@
         :log_file => @log_file, :pid_file => @pid_file, :environment => @environment,
         :docroot => @docroot, :mime_map => @mime_map,
         :debug => @debug, :includes => ["mongrel"], :config_script => @config_script,
-        :num_procs => @num_procs, :timeout => @timeout, :cpu => @cpu
+        :num_procs => @num_procs, :timeout => @timeout, :cpu => @cpu, :prefix => @prefix
       }
 
       if @config_file
         STDERR.puts "** Loading settings from #{@config_file} (command line options override)."
         conf = YAML.load_file(@config_file)
-        @options = conf.merge(@options)
+        @options = @options.merge! conf
       end
 
       argv = []
@@ -111,6 +113,7 @@
       argv << "-B" if @options[:debug]
       argv << "-S \"#{@options[:config_script]}\"" if @options[:config_script]
       argv << "-u #{@options[:cpu.to_i]}" if @options[:cpu]
+      argv << "--prefix \"#{@options[:prefix]}\"" if @options[:prefix]
 
       svc = Win32::Service.new
       begin
@@ -217,4 +220,4 @@
       end
     end
   end
-end
\ No newline at end of file
+end
Index: projects/mongrel_service/bin/mongrel_service
===================================================================
--- projects/mongrel_service/bin/mongrel_service	(revision 298)
+++ projects/mongrel_service/bin/mongrel_service	(working copy)
@@ -65,11 +65,12 @@
         end
 
         log "Starting Rails in environment #{defaults[:environment]} ..."
-        uri "/", :handler => rails(:mime => mime)
+        log "Mounting Rails at #{defaults[:prefix]}..." if defaults[:prefix]
+        uri defaults[:prefix] || "/", :handler => rails(:mime => mime, :prefix => defaults[:prefix])
         log "Rails loaded."
 
-        #log "Loading any Rails specific GemPlugins"
-        #load_plugins
+        log "Loading any Rails specific GemPlugins"
+        load_plugins
 
         if defaults[:config_script]
           log "Loading #{defaults[:config_script]} external config script"
@@ -108,7 +109,8 @@
   :debug        => false,
   :config_file  => nil,
   :config_script => nil,
-  :cpu          => nil
+  :cpu          => nil,
+  :prefix       => nil
 }
 
 ARGV.options do |opts|
@@ -126,6 +128,7 @@
   opts.on('-C', '--config FILE', "Use a config file") { |OPTIONS[:config_file]| }
   opts.on('-S', '--script FILE', "Load the given file as an extra config script.") { |OPTIONS[:config_script]| }
   opts.on('-u', '--cpu CPU', "Bind the process to specific cpu, starting from 1.") { |OPTIONS[:cpu]| }
+  opts.on('--prefix PATH', "URL prefix for Rails app") { |OPTIONS[:prefix]| }
 
   opts.parse!
 end