Try reinstalling Firefox. Before re-installation remove the Firefox profiles and other stuff from ur "Documents and Settings\%user-name%\Application Data\Mozilla\Firefox" folder.
Actually i just formatted the windows ... so didn't bother to install anti-spywares n all , isn't there any other solution ? Anyone else with a similar problem ?
As i said i just formatted my system .. anyways .. i was successful in catching that bastid ...it was sitting in my C root directory and was running thru svchost.exe. After some research all i had to do was track the bastid n delete all d files plus end the user started svchost.exe process