you posted the links to the removal advisories, you attempted to follow them but couldn't.
When your AV flags this/these, what are the detected names/paths? That would be a place to start looking.
You will need to display hidden files, which you can do via "tools>folder options" in any explorer window.
http://www.superantispyware.com/ has a good reputation for helping to remove this sort of nasty, give it a whirl.
My computer is affected with Spyware.Netrat and TrojanDownloader:Win32/Harnig.gen!L (trojan Horse) but my antivirus can't remove it. I use the Norton AntiVirus 2008 with Antispyware and I have Window XP. Both of the Spyware and Trojan are from a compressed file. I try to manually deleted it but i didn't find the file stated in the manual (http://www.symantec.com/security_response/writeup.jsp?docid=2003-080811-2822-99&tabid=3
http://www.symantec.com/security_response/writeup.jsp?docid=2004-021914-2822-99&tabid=3) Can you please help me out on how to remove it because the computer has been affected over a month and i don't know if any of my information was taken by a third-party? Thanks in advanced.