I had a lot of trouble with trojans, viruses and malware on my PC. I managed to fix all those with the help of this forum. I then installed XP SP 2 with the auto-updates option on my PC. That installed fine. When I rebooted, I was unable to open any programs like INternet Explorer or Office programs. However the PC is not frozen, as I can open things like Control Panel to a point. Is there a way to roll back XP SP 2? Any ideas?