That came across as unnecessarily mean of me, sorry. Here's a link to a troubleshooting guide, don't know how good it is, just the first thing I found:
http://www.teamswift.net/viewtopic.php?f=9&t=35213 I think more reading about at TeamSwift will get you more info, your failure is not rare.
Seems to me, if it shifts fine manually, it has to be the controller, solenoids, or the wiring in between. Taking my advice on an automatic transmission is not the best way to go, I've only owned one in my entire life and that was 40 years ago.