Posted 28 July 2005 - 01:59 PM
As others have mentioned you may try to installing Anti-spyware softwares. I would suggest one more SpyBot. Before doing all of these, try to boot to safemode, and disabled all the unnecessary and suspicious programs running at the startup.
start->run->msconfig then click on startup tab
Always use a firewal if the computer is going to be on internet.
Update the anti-virus software and do a complete system scan. Since the anti-virus software is crashing, it looks like your computer might be infected with some kinda virus.