winguard2009.microsoft.com

I have a piece of malware on my computer. The malware keeps wanting to redirect my pages to "winguard2009.microsoft.com". After running AntiVirus 2004 with today's (11-4-09) latest updates, I still can not get the items cleaned. The following files are showing infected:
C:\WINNT\System32\iehelper.dll
C:\WINNT\System32\tipjile.dll
C:\WINNT\System32\siruboma.dll
C:\WINNT\System32\fisuneje.dll

The following message is displayed:

"Actions taken: Clean Failed: Quarantine failed: Access denied.

My operatin system is Windows 2000, Version 5, (build 2195; Service Pack 4)

Any help that can be offered would be great,

Thanks.

Gary