go to 'Tools --> Extensions' and drag the 'gr.xpi' onto the extensions window. accept the instalation. then just restart firefox.
If you guys are using my plugin, please put this on your sig: Code: [URL=http://www.gamerenders.com/forum/index.php?showtopic=64623][IMG]http://img298.imageshack.us/img298/2390/grpluginuser0ve.gif[/IMG][/URL]