06-18-2011 05:10 PM
Have you done any searching? There's a few threads on it. Here's a large thread I grabbed quick for you.
You'll need to set the permissions in the blackberry-tablet.xml to allow for Internet access. Then you'll need to obtain an API key from Google for their Google Maps. They also have sample code on the Google Maps.
If you search Google for the Google Maps API you'll get their dev page, which is here.