Gregory,
You're in good company! I had the same problem which proved to be
completely intractable -it persisted with Paradise, Orchid and ATI boards.
Is your computer by any chance a Northgate 386/33.
It was only when I upgraded to a 486/33 (another brand) that I was
able to use the AAPro without contamination in the 640 X 480 format.
The Autodesk people took the somewhat cavalier and lofty position
that they could hardly guarantee compatibiliy with *every* combination ion
of system components! Well —-I never heard of these consistent problems
arising with other comparable software. I must have encountered a half a
dozen people with the same complaint. When I bought the 486/33, I made the
purchase contingent upon compatibility with AAPro. The vendor had never
had such a demand layed on him before. -And it didn't work at first, until
I changed the mouse driver.
Good luck!!
Stephen