All my programs crash when logging in

then I can't open most of them, my World of Warcraft was hacked yesterday and I'm using windows server 2008 so I have a low choice for AV when I have Avast installed, it boots into windows and Explorer.exe crashes and restarts OVER AND OVER again. Please help. I scanned in safe mode, it found 2 viruses and deleted one and moves the other.

and I also find (I'm running in safe mode right now) that when ever I download things they download as 0kb files.. and don't work.