CoolWebSearch Hijacker Killing My Computer

The other week I ran across a warez site that loaded a stupid browser hijacker on this computer called CWS or CoolWebSearch. I have got the removal tool, ad aware, hijack this and i still cant kill the stupid little bug. It keeps coming back. If anyone has an idea on how to kill the thing email me at SyphonXP@cfl.rr.com telling me how to get rid of it. Its annoying the hell out of me. I have tightened the security settings on the system and removed the little thing agian hoping ot keep it out now. But it seems to come back all the time anyways.