Ad-aware (ran awhile ago, could not run recently as got 'blue screen of death')
Windows Update (fully updated)
and then installed spywareguard, spybot s&d, and zonealarm to keep future malware out. I've removed all of these programs, because shortly after installing them I had trouble logging into yahoo (where I have my email). I changed internet exlporer so that I could approve of any cookies, and after approving yahoo, I now cannot get past the login page. The login page stalls out everytime I try to login. Has anybody experienced this before or know how to help? Thanks!