PLease help with my laptop?

i have a windows xp media center edition 2005. it all started last night around 12篓30 on July 30,2007. I had recently downloaded a trainer for a game, and i had also installed a new driver(i use driver genius professiona). anyway, i was playing and all of a sudden, my antivirus kaspersky said that the trainer was an invader, a risk. i allowed it to my trusted zone. However, i soon found out that the trainer wasnt working for some reason. So i deleted it, and then i started playing till 1 00 am. i started realizing that the computer was acting slow, and my music was going back and forth. So i told Kaspersky to scan everything. so i left it all night to scan. When i woke up, i found out that the computer had restarted itself. So i started it and then i could open my internet explorer but it would take a long time. I would open my document, and then it would say not responding. I did a system restore to July 29, but it didnt work. its still slow. has slow relexes, should i call dell. help

PLease help with my laptop?stinger

Just format your hard drive and start a fresh install of XP.

PLease help with my laptop?virus scanner

"i was playing and all of a sudden, my antivirus kaspersky said that the trainer was an invader, a risk. i allowed it to my trusted zone."