Re: xp antivirus removal
Try running hijackthis. Also you could try looking in the registry for any remnants of it and delete them. Just make sure you know what you're deleting. As for the start up, you could try getting rid of that in MSCONFIG, or download winpatrol to stop it from coming up.
EDIT: Here's a removal tool: http://fix-computer-problem.com/rogu...antivirus.html
You don't necessarily have to download it but you could try deleting the registry keys and files it says to delete.
Desktop: Dell Dimension E510, 2.5GB RAM, Intel P4 3.0GHZ, 250GB HDD, Windows Vista Premium. Might not be the best, but the old girl is still running good.