Okay. Bro. here's the problem it doesn't see the characters because they dont have the right .pcx files. If you notice the ones that are standard in the file have more files, especially a character selection screen icon. I can't seem to find many character sets that have all of them, except Cap. America and Venom. The rest off of Gp32spain, are only basic ones. Hope this helps, if anyone can find out how to make them work, before I do, give us a yell.
-Matt