I have F-Prot Anti-Virus. The "Realtime Protector" Keeps warning me:
C:\Windows\System32\winlj.exe is a security risk named W32/Agent.AGH
I have scanned several times but F-Prot can't get rid of it..Have run Spy-Bot and Ad-Aware. Tried deleting the file, but got "Cannot delete winlj.exe, Access denied"

How do I get rid of this? The "Realtime Protector" screen keeps popping up everytime I touch anything on my computer and my home page in IE has been hijacked and my computer is running slow.

Help
Thanks
John