Unable to remove virus using A/V in Norton Systemworks 2006

I have run Norton A/V in my Norton Systemworks 2006, and each time I run it I get two hits.  One is Downloader and the other is a Trojan Horse.  When I click on the link to see what each one is on your website, this is what the link says for Downloader: 

http://securityresponse.symantec.com/security_response/writeup.jsp?docid=2002-101518-4323-99&tabid=3

 

and this is what the link says for the trojan:

http://securityresponse.symantec.com/security_response/writeup.jsp?docid=2004-021914-2822-99

 

I have done what it says.....make sure my definitions are up tp date, turn off Windows restore, run in Safe Mode, and run Norton A/V.  I have done this and I still get these two hits.  When I try to remove them, it says that the action has failed to remove them.  What do I do now?

 

I am running Windows XP on a 3.06 Ghz Pentium 4.