trojan.zeroaccess!inf4 manual removal - Multiple Norton alerts

Hi

 

I've been trying to get this off my computer for a few days. I'm at a loss. Can someone help me? I've run a few different virus cleaners and Norton. It also has the trojan.gen and gen2 and zeroaccess2 and 3 popping up with the services.exe causing alerts in Norton.

 

Also, I am running Windows 7 home premium, 64 bit.

 

What can I do to remove this virus?

 

I appreciate any help.

 

Thanks!
Michelle