I have two BT GPSr units available, if anyone on the list is interested:

 

 

BT77 Bluetooth GPS Receiver

 

and

 

Freedom Keychain GPS Receiver

 

 

I frequently used these with my WM PDA, but with a recent ROM upgrade that enabled the built-in GPS functionality, I no longer need them.  Both are in used condition, but have excellent battery life and work well with either PDAs or laptops (with BT capability, of course!).