Scumm VM

I'm trying to get some games to work for some people, but they don't even show up like they do on the older versions and i'm slightly confused as to what files I need to run a game. Any suggestions?

Well obviously you need complete game files aquired from... (usual places)

You been here yet:
www.scummvm.org/

I have the original disks, and even when I put the entire disk on the psp mem stick, there arent any files playable