did you already try this driver?
You have to scroll down for the "Mac Intel/ PPC / OS9" drivers. Works fine with my SDC 10" touch screen (it's the 2nd screen ... don't worry )
unfortunately, the two drivers above are basically the same TPMon TouchKit drivers. I have used these with a resistive screen I had but the AOC doesn't appear to like them.
Running parallels, the drivers from the AOC site are working perfectly. unfortunately i haven't been able to callibrate the screen as of yet so that is a little annoying but it isn't far off.
In Mac os i am yet to find any useful drivers. I did read on one site that touch-base have some drivers that can handle the AOC but they charge £180 for a single license and i dont know if i can justify that for the gimic of touch screen in mac.
of course, if anyone out there knows of a similar driver to the touch-base one i would be only too happy to try it. i believe the have a gesture recognition package that can be run along side the driver to open up a few more features.
sorry this isn't particularly helpful but hopefully it opens a few doors to ideas in people.
I'm keen to see how this all turns out and if anyone manages to get the monitor running.