I've finally hammered out a search plug-in for Firefox. Unfortunately the wait to get new plug-ins approved by Firefox is something like 8 months, so I'm just going to go ahead and put it here for those tech savvy enough to load them themselves.
These need to be installed in the /searchplugins/ directory of Firefox. Here is where you can find the directory need. Simply download the above files into these directories and then restart. Should work....
On Windows, this is usually "C:\Program Files\Mozilla\" and "C:\Program Files\Mozilla Firefox\" for Mozilla and Firefox users respectively. This path may vary on a per computer basis and doing a search on your computer for "Mozilla", "Firefox", "searchplugins" will help.
On Mac OS X, it is usually under your Applications folder. Note for Mac OS X users: The "searchplugins" folder is within the Firefox/Mozilla Suite Applications folder (Mozilla.app or Firefox.app), but clicking on it will start the program. To open this folder and see the folders beneath: Ctrl-click "Mozilla.app" or "Firefox.app" and select "Show Package Contents". The folder should be at one of the following locations:
