A few weeks ago, I checked out a commercial GPS program, Wayfinder. Link... Wayfinder UK - Home
$99/yr.
I can't recall why I moved on but others may find it worth checking out.

Now, I'm trying to decide if Nav4All is sufficient, if not, then should I go to TeleNav, or would I be better off just paying for a separate GPS device. My concern with all BB GPS programs is that they seem to be effected when you get or make a call and my BB is primarily a phone first.