Originally Posted by ill_temper
I Dont really want to pay any more i was under the impression that my 8900 did it
The 8900 has a GPS receiver. However, unless you can navigate with just latitude and longitude you need a GPS app. The app provides all other features (maps, POI's, directions, voice prompts, etc etc). This is how it is for every GPS-equipped model of BB.
Some apps are free, some are not. There's a very full list of options at the top of this forum. Definitely read up but you'll be best served by trying several apps out first hand to determine which suits you best.