Thanks Ken, I sent him an email.
I've seen the document on how to format a drive to be Megatouch-compatible, and I'm savvy enough that it makes sense. I figured the software would be readily-enough available that I could just do this myself, since the Dallas security key is the critical part to the equation to get the software to work... But so far no luck.
Hopefully I didn't buy a boat anchor and he can help me get her running. Until I know more about the Megatouch machines, I'm hesitant to buy from the ebayers because some people just want to sell stuff, and could really care less if they were selling you the right thing or not. If he comes recommended by you, I'm sure he's a good guy. Thanks.