Just did a Google search for you & came across this repair by nellie2 - click here.
Apart from HijackThis, if you don't have Adaware, Spybot, CWS, SpywareBlaster, SpywareGuard & IE-Spyad. I strongly recommend to install, update & run the first three. The others run in the 'background' & just need to be activated/enabled for protection (anyone please correct me if wrong). Remember to check for UPDATES regularly with ALL, & run frequent scans.
Incidentally, nellie2/Nellie2 fortunately also belongs to THIS forum & was recently complimented for her sterling efforts by our grateful forum members here - click here. HTH, G
[To download - Adaware: click here, Spybot-S&D: click here, CWShredder: click here, SpywareBlaster: click here. SpywareGuard: click here & IE-Spyad: click here. Some also recommend a² Free (a-squared): click here.]