Pocket HMI by Narly Software has worked for me. I used it on my PalmV. Unfortunately, it does not work on my new HandSpring Visor. The Visor and some new Palms use a USB port instead of a serial port. I tried to find a USB to Serial adapter, but I had no luck. I was told that you can make a USB port listen to slower serial, but you can not slow down USB for a slower serial port. Here is the URL for Narly: http://www.narlysoftware.com/ Good Luck! - Chip