Trojan Ransack PC

A week ago my computer started slowing, and as of two days ago, it runs impossibly slow, and most programs won't even open, including my task manager. It will not system restore. I decided to go to safe mode, ran a scan using super antispyware, which came up with all harmless cookies. Then, I ran avira, and even though it crashed both times I ran it in the 60's, the first time it crashed at 62.7%, and it sensed a virus it called dldr/digstream. I found it was in my program files, so I deleted the digstream folder (usually an espn/disney folder) instead of uninstalling. Then the second time I ran avira after restarting my pc in safe mode, it found what it calls TR/Vundo.Gen Trojan in my windows temp folder, and it calls it quarantine object 4c810149.qua. I run XP service pack 3.

 

I am currently running the reccomended diagnostics, and they will be shortly attached.

 

my situation is best explained here - http://www.techsupportforum.com/forums/f50/trojan-rendering-pc-useless-641596.html