Here is the betaversion, available in the download page (BetaVersion for BlackberryV0800.zip). Containts two version: one for GPS enabeld phone, the other for non GPS blackberries. http://j2memap.landspurg.net
Here is a snapshot of what it looks:
You can define a Waypoint, so it show the direction between you're current location and you're target location, as well as the distance....
for GPS, you can enable/disable the autotrack, even record you're track and send it to the server and get the data as a gpx file (but server part is not yet open)!
Interface needs oviously some rework, but that's a Beta!
Other new features included: some better shortcutr for blackberry, zoom in is 'i' or '+', zoom out is '-' or 'u', next is 'O' prev is 'p'... There might be some issue with keyboard mapping and so on, but testing is a nightmare with all the different defice for a part time project!
So enjoy, and feel free to provide me feedback