The PDAwin and ProntoPro are compatible.
So make a PRONTO PRO ccf (others than PRO, the hard button transfer won't work)

So:
1) you don't get the full screen (but there you can check Stewart Allens link)
2) IF you have a CCF for ProntoPro ALL HARD BUTTONS ARE AUTOMATICALLY transfered into the PDA as follows:
Vol+ = cursor up
Vol- = cursor down
Ch- = cursor left
Ch+ = cursor right
Mute = cursor center
the 4 low hard buttons also transfer perfectly to the 4 PDA buttons.
So at least the hard button problem is solved...

As for response from PDAwin I've been waiting since May, so don't get to optimistic.