[deep309]

I am running TOMTOM 6 and it works for me. Try either one of these methods. First prime the GPS by opening GPS VIEWER and then Google maps and then get a lock on the sats. Once the sats lock you can close Google maps but leave GPS Viewer running and then open TOMTOM and most of the time you will see the sat strength bars in the lower right corner displaying your sat strenght and your current position.
OR Prime agian open TOMTOM click the sat strength bars in the lower right corner, click the sat strength bars again just below the battery level icon, click configure, select "other bluetooth gps receiver" click select, click continue, click com 4 and then you should be able to see the various sats that your GPS Viewer is locked onto, click done and the map should show your current position.
Hope this helps.

D.