Zeroaccess and Gen.2 popups

Norton keeps popping up with Zeroaccess, Gen.2, and now Zeroaccess!inf trojans. After doing searches on these it seems as if this is the place with the most knowledge of these trojans. The popups don't stop. Could someone please help me with this? It would be much appreciated and thank you.

 

I have Windows Vista Home Premium with Service Pack 2 on a 32 bit operating system.

 

Again, thank you.

 

Edit- I do have a flash drive.