Yep, that's where I got most of the info I have. The other info I have is from the Oki MSC1162A spec sheet, which is the primary driver chip on the board.
However the stuff at the OVC site is very high level, and the code is only available as a hex file for PIC controllers. I have no PIC hardware or software, so I have been unable to make use of the code.
Thanks, though!
-Pete