I made a small 3d racing game (in rough alpha phase) that you can download at;
www.gamedevvault.com/dbpro/race/race.zip
feel free to use or destroy any part of it you want, thats what I made it for. Keep in mind that it it only works on some computers.
I made it 2 weeks after I got DBPro, so the code has flaws. Mainly that unless you have a highend PC, it may not even run. But the code there is a great place to start to get you the idea.
When you run it the screen goes black for about 12 seconds, so be ready for that. It should run after that that though.
Hope it helps, and have fun.
Cypher