Talked about this on the IRC channel, JonSyn's been looking through his CD's for the ROMs, since he's unfortunate enough to not have owned a sharpie.
Anyone who's on GGPO, go on there, name's IsshunSengeki, I'm always on one of these rooms:
Street Fighter III 3rd Strike
Street Fighter Alpha 3
Marvel Super Heroes vs. Street Fighter (Sometimes, it's just that nobody is EVER in that room)
For those that don't know what GGPO is, here's a brief description:
GGPO (Good Game, Peace Out) is a free program that lets you play classic arcade games online. Their compatibility list isn't massive, but for the games that it does support, the online play is superb. I'm in Australia, and I have next to no lag when I'm playing against someone in Japan. To play, you need to have the appropriate MAME roms (SFIII 3rd Strike, you need sfiii3.zip and sfiii3n.zip, and for NeoGeo games, you need the MAME game rom and the NeoGeo BIOS rom).
Honestly, it's a fantastic program, runs off Final Burn Alpha (better CPS-2 and CPS-3 compatibility than MAME, better NeoGeo compatibility than NeoRAGEx, which I love), it will accept any controller (If I don't have my arcade stick I either use my Xbox 360 controller or worst case my keyboard) and has close to no lag. So come join me, it's awesome.http://ggpo.net/