Does anyone make one? If so where can I pick one up at?

I think TCI may have one, but what are you trying to accomplish? If you use the GM performance parts stand alone computer you can get the trans to do about anything you want.

I want it to stay in the gear that I put it in... reguardless of RPM. Also I want to be able to start in a gear other than first.... like 2nd or 3rd when I'm in low. Can this be accomplished with a comptuter? I had heard that a manual valve body was the answer, so that I can shift it and control it almost like a manual.

I haven't hooked my computer up yet, but according to the manual you can hold whatever gear you want electronicly. Call TCI, they make the computer and they are pretty good about giving out info.