Trojan.Zeroaccess.B, Trojan.Gen.2, and Trojan.Gen help

A pop up every couple of minutes comes up saying that Auto-Protect Scan found Trojan.Zeroaccess.B, Trojan.Gen.2 or Trojan.Gen.  Any help would be very appreciated!

 

I'm running Windows 7 32-bit and I also have a flash drive.