This is my first time emulating, and I am trying to use a super puzzle fighter II Turbo rom in nebula. I think i have the right files (or at least the ones asked for when I try to load the rom) but I'm not sure where I am supposed to put them, or if I am missing something. I tried putting the files in both the rom and ROMDATA folders, and both times when I selected the game from the load rom screen, it showed the files as missing.

Can some one tell me my newb mistake?

Go here and download FBA instead. Run it once and then add the roms to the ROMS folder. Go to Game>Load Game and navigate to the ROMS folder, and it should scan for roms automatically.

You must have the parent rom 'spf2t.zip' to run the game. The Asian clone 'spf2ta.zip' and the Japanese version 'spf2xj.zip' can be added too if you wish to use those variants instead of the US parent.

Good luck, and welcome to 1emu!