It is honestly really easy (might take you... I'd say... 2 hours to figure out from scratch)...
Wow, thanks for the concise info. I actually might do that now, but strangely enough I would do it more for the no-nag feature than for the hi-scores.

Again, thanks for the quick-and-dirty breakdown.
As it stands, my plans are now as follows:
1.
Put up the white board. (Done!)
2. Re-configure Mala on QH: edit QH graphics, layout and gamelist(s) to reflect an even more straight-forward design.
3. (Maybe roll my own MAME.)
4. Continue designing (and building the budget for) the new cocktail cab ... because at this point, folks, I'm pretty sure I'm going to
keep QH alive!
5. Better document the process than I did with QH, including starting a thread and posting Sketchup files, pics during build, etc.
... and hopefully get the actual physical build done before Tekken 6 comes out at the end of October, because I will get nothing done once that happens.
Ironic, no?
Anyway, thanks to all for your support and input! I think the white board really put my decision over the top... well, that and the thought of potentially networking the two cabs together... hehehe...