I am currently updating a Compaq Armada M300 (s/n 1J17JKB5E00W) as far as it can be, given system limitations. It has Windows 2000 Pro with SP2 on it now. I tried installing SP4, but it fails with this error..."The file c:\winnt\system32\stimon.exe is open or in use by another program." I looked in Task Manager, Running Tasks, Services, and MSConfig for stimon.exe or stisvc. It was not listed in any of those places, either as running or not running. I am confused. What program could be using stimon.exe if it's not listed at all?