Because I used to own an Ipaq I still visit Pocketpcthoughts.com to see what's happening in that arena. I noticed that a company has just produced software for the Pocket PC platform that tracks your GPRS usage.

http://www.softspb.com/products/gprsmonitor/index.html

I e-mailed them to see if they had any plans for a Palm platform offering. Unfortunately, they do not. But it is doable. Is there any word on the horizon of such a program in the works for Palm devices?