To answer your question, yes there are full sets that can be acquired for just about every console. Google for Good Tools and emulators or roms and it should pop them up. I know they exist because I have the NES one....it is like 8200 some odd roms big. Every Japanese and US version of every game=good sized file. Anyway I hope that helps...I pulled all of my roms sets off of DC++.
Mogwai