Not sure what Win 2000 does, but are you running PAF 3 in a "window"? That is, do you have a "bar" across the top of your screen that shows the MSDOS symbol on the left hand side and has a collection of other small icons in the bar? If so, go to where you have your PAF 3 program installed. Find the PAF.exe icon. Right click on that and select PROPERTIES and then the SCREEN tab in the window that opens. Tick FULL SCREEN and over to the right in INITIAL SIZE select DEFAULT. That should bring it back to a full screen. However, as I am describing the steps from Windows 98, I am not sure of the exact steps you would take in Windows 2000, but it would be similar I feel sure.