NIS will not remove Trojan.FakeAV!gen3

Hello everyone. My computer was seriously infected. I bought Norton because my other program let the virus on in the first place.

 

Now after several scans, viruses keep being found. I am a very delicate surfer and I can't understand why the virus isn't gone for good.

 

This is one of them:  Trojan.FakeAV!gen3

 

How is this still getting on my machine? Isn't NIS supposed to dig in and find it for good?

 

Thanks.

 

[edit: Clarified subject.]

Message Edited by shannons on 10-23-2009 02:48 PM