You'd need to run what's called an emulator. It's a program that mimics a particular device, in this case a Palm Pilot. Start here: google is your friend
Thanks guys, I tried the simulator and emulator for the Palm OS. I ran into problems as I wanted to run an application but I do not have a Palm PDA. My skills are maxed to this point. Thanks for the replies.
Glad I could help..... I bet that is a pretty usefule tool for others in your predicament. Plus, not to sound like a geek but the Palm emulator is pretty fun to play with!