only way your gonna get sf1 running perfectly is by getting the memory upgrade as far as i know, you can add screenshots to mameox but due to xbox's limits, you can't have all pics (4000 or so file limit per a folder). i'm not sure if you're able to just use title.zip and/or snap.zip just for pics as i haven't had the time to try it out. as for kawa-x, theres no way as of yet and i think this is something someone would've done when kawa-x hacking was such a big thing. not sure about the mk thing you're talking about but there might be a guy in x-s forums working on a mame-x mk only version but seems to be busy lately.