For my father in law I had to install on his iPaq 3970 with TomTom 5, cause he could not get his BT GPS module to work. After searching the web I found the solution. Pear the GPS device (mouse) as you normally do, start the connection to the GPS . Now fire up the TomTom application. Instead of selecting the normal BT device/mouse, you choose: Other cable-NMEA-GPS (Andere Kabel-nmea-gps), select 9600 as the baud rate. Then select the Bluetooth port 5, and confirm your configuration. Now it all should work! The problem is that the bluetooth driver in the new TomTom 5 does not connect at 9600, but the BT mouse can only do that speed…