Virut.A has my system tied up

Hi, I had to do a reinstall of XP Pro last week, and I have everything running, but I have a real virus problem. I have a virus that is not allowing me to install antivirus software or if it does, it mucks it up. I use the AVG antivirus and when I manage to get it installed, the virus attacks the PC and puts it into a loop of restarts. If I go to the pandasoft website and try to do an online scan, it crashes that, same if I try to do it in safe mode. I can't install AVG in safe mode because it errors out. The virus that is attacking is Virut.A. Any ideas on how to kill this? I was thinking of taking the hard drive to another computer that actively has antivirus software running, and trying to kill it with that, would that work? Its driving me crazy because I really wish to have an antivirus software that is running, uncorrupted on my machine. Thanks.

I just noticed I'm in the wrong section, I'll move it.