Why do you want this on a dreamcast? Or do you just want the game, without having to buy the ... uh, whatever console this game came out on (was it a PS? - I think so...)
If you just want the game, go to
www.emumania.com
In fact, if you want this, or anyother sf game (except the sf3 series - and there is no emu for that) go to
www.emumania.com - yes, its in spanish. No, I don't speka da spanish.
But just mosey along to the cps-2 section (on the left hand side, half way down), download the emu of yer choice and start downloading the games available!!!
Lots of fun, and cheaper then spending 20 a day on sf...