I think Evil69er is talking about the Software Updates Package number 3. Microsoft has released several of this software update packages that add software compatibility to Win2k. The latest version on Windows Update is the third one I think. Evil69er, these are definitely different from a Service Pack. Win2k only has SP1 for it right now. If you used NT 4.0 SP3 on your Win2k install, I don't think you would be running your system too well right now.