Well the reason I wanted the CPS-3 emulation was because I need to make the coin door microswitch and you know how it says "Capcom" when you insert the quarter then press start. If I used DC version or PS2 I would have to wire the start button to the microswitch in coindoor. Also it is because I was going to turn my garage into an arcade and hold tournaments there. Also when the first tournament hits for fighting games I will post here so whoever wants to come can. Thanx.
-See Ya!!!
If that is your intention then mame still wont do the trick for you man..i mean..you know..if it was really all that easy then arcade dealers would use mame as their new PCBs(how you gonna boot the computer to a single game using mame?i dont think its possible

).
see...i used to work for an arcade(yeah the place where i got some machines) and they use DREAMCAST and PS2 in some of their cabinet(the owner had custom ordered some chips from hongkong similer to mgcd).
so they use dreamcast in some of their arcade machines and no one can really tell the difference between the real naomi and dreamcast.
so if you are holding some kind of tournment then i would say just do it simple and dont even wire up the coin door.you just add a start button on your panel.
besides if you are waiting for cp3 emulation then GOOD LUCK(who knows when they will be emulated)

...dreamcast already has sf3 NG,sf3 DI,and 3rd strike(crap like cps3 jojo bizzare adventure is also for dreamcast) all perfectly ported from the arcade version so you could play all 3 if you want right now.
I know eightbit is trying to stone me(trying to show everyone that i am killing mame) here but the 2 cabs i convertered werent even mame(i forgot to mention).there was no mame installed,both of them had dreamcast in there and i sold them both as "DREAMCAST in an arcade machine" with real arcade monitor,use real controls and not jamma cabinet where you make money(people would pay for a cabinet with dreamcast if they dont know how to wire up dreamcast to real arcade joysticks and monitor).
why i didnt go for mame conversion?because a decent computer cost atleast $400 while a dreamcast at the time was only $50.DO the math

thats just my 0.02 regarding your tournment(ahh..man i wish i could be there).
I don't think you can legally charge a person to play your dreamcast. I don't know anybody that would pay even if it is legal.
depends on the location dude...i have seen dreamcast in Chinatown where you can play like half hour for $2(same goes for any other consoles).not that i would ever pay for playing but there are places like this(i would buy all the systems and games if i really had to play certain game).