Hi, Everybody, I'm new here And I've request.. I'm having a problem with my server (Windows 2003 for Small Business Server) I was using Symantec Norton Antivirus Corporate Edition but for a long time when I do virus check with it, it didn't find any virus and it surprises me. Then i installed AVG and with it I found out some viruses and deleted, but later it started to work as Norton. Then i installed CounterSpy and it checks spyware and viruses too and found out Mailtrojan Backdoor on C:\WINDOWS\system32\wins.exe And I dont know what to do, just keeping that Mailtrojan backdoor on CounterSpy's Quarantine. Is there any possibility to remove virus without reinstalling system or formatting...??? My system is very big and complicated, I can't imagine to reinstall it.. and hoping to find another way of getting rid of from virus.. Now I realized the server started to work slowly.. and I'm worrying.. Please, help me???!!!! Thanks! Blessings!