Since the scrapers usually get the info from an external site, the easiest solution would be to add that information there. Otherwise, I know Skyscraper has an import scraping module where you can add your own information, complementing what's on the source site, but that has to be done for each ROM - so it's just like editing the information manually from EmulationStation or directly adding that information to the gamelist.xml file.
@herb_fargus I love this kind of stuff! New games for old systems is awesome. Really hits the nostalgia button and offers something new too. Now if only I could get more than 7fps in Goldfinger N64 my life would be complete.
This is just about the coolest hack ever! Get ready to play Super Mario Bros the same way you play Mario Wii.... by inadvertently killing your co-op partner ever 30 seconds! This is just awesome and so much fun! It gets really hard on later levels! Google this on romhacking.net!
still dabbling with it not having much luck at the moment the bor portion of paintown runns pretty well but so far any attempts to utilize the mugen portion of paintown results in codedumps the main menu is pretty much all i have running in mugen right now and it also lags