InlandAZ, Draclvr, and Jenny100, thanks so much for your quick responses.
InlandAZ, I found the option to List All Modes and it gives a list of all the supported resolutions, colors, and refresh rates. According to Windows XP Help, from that list I can select the settings I want. When I get ready to play one of those games, I'll try it. If it doesn't work, then I'll install the Viewsonic drivers.
Jenny100, I do have the CD that came with the monitor, but I didn't use it. Under Win98SE I never had to install drivers for my monitor - it automatically recognized whatever monitor I was using and listed it by name along with all the supported resolutions, colors, and refresh rates.
Again, thank all of you for your quick help and advice.

Jema