"I encoded a avi file with Dr.DivX and it came out fine, one teeny-weeny problem, it was upside down!"
I thought the original problem was that kaybing27 was using Dr DivX and had a problem with the video being upside down.
Sure VirtualDub can be used, and it can flip and do lots of other things, but to fix the problem...
As a newbie, Dr DivX is certainly easy to use, and gives good results.
Kaybing27, make sure you go onto the Dr DivX site and look through the FAQs, and get that Bigfix program. It's put together by one of the very experienced support/users/testers that works with DivX and Dr DivX.