Michelle, Other sites to look at for Palm and Pocket PC programs
(different like Mac and PC) are as follows:

http://www.palmflying.com/palmefmm.html

and

http://www.palmaviation.com/software.../palm_soft.htm

This site has Palm and PocketPC nav programs listed.

I believe that as long as the GPS unit can output NMEA 0183 data that
will work. Some PDAs accept a GPS module but that form factor may or
may not work with a computer. Plus you need reasonable visibility to
GPS satellites so a PDA mounted on a yoke with integral GPS module may
not perform ideally.

Ron Lee