Hi,
Hit ctrl-alt-delete and a window will pop up with a list of all the programs running. Close everything you don't need. With Win 98, you only need systray and explorer. If you're using XP, I think you need a couple of other programs running, not sure which ones though.
For whatever it's worth, I designed a FACET 2300 for AFPD over the winter, since I couldn't fly mine. Here's a couple of shots.