A few months ago, when I was first learning DB, I created a level editor with VB for a DB game I was making. Since I kinda lost interest in the project, I'll release the source for the level editor and what little I had done with the game. I don't have time right now to explain what I did, but hopefully, by looking at the code, you can understand what I was doing.
If you have any questions about how this works, just ask, and when I get a moment, I'll try to answer the best I can.
Download here:
http://www.hytekproductions.com/vbexample.zip