I'm having an issue on my computer. My friend downloaded a bunch of hacks for a game of his on my computer. I'm not sure whats causing this but now, it takes longer to login to my accounts on my computer, (im on windows XP, SP3), and when it finally logs in, my taskbar wont show up. My icons also take awhile to show up. I dont have any antivirus software so i cant get rid of this. Also my audio doesnt work, and it takes awhile for my networking service to start up. Theres also a few programs i cant use, like windows media player, MS paint, etc. Any help? A virus scanner? Anything?