HI - one of client's server Windows 2003 svc pack 2 (stand alone - No AD) is missing the Local Users and Groups option in the Computer Management window. I suspect the machine is compromised. I preformed a scan and found Vundo and Browser Hijacker malware. I removed and rebooted, but now when I try to access services, the window screen is blank using the Extended tab. If I select the Standard tab, I can see the services, but cannot access or start services or select properties. I also noted in the C:\Documents and Settings folder, there are new user folders and one is called Devil$. There is a total of 20 folders with various names. Can someone provide me some suggestions to regain control of the machine? Mostly like, we will have to format and reinstall, but I need to do a back up of client data and this problem will not let me add an external USB drive. I would normally pull the drive, but this is a RAID system. Thanks for a quick response.