Visual3D's community is awesome. This is mainly due to the fact that there are people involved with the development of Visual3D on the forum actually answering questions. I asked a pretty simple question, and a mod offered to forward it to a developer. A little while later, they answered my question perfectly.

This degree of help may stop when Visual3D gets out of beta, but by then hopefully there will be more documentation as well as more high level users on the forum besides the developers.

So now my person moves (almost) the way I want them to. The only bug is tha I can't seem to figure out how to make them go diagonally... I might have to send the keyboard input to the avatar directly, instead of through the system they have set up for handling avatar movement. Hopefully though, I can find something that can handle keyup events.