I still can't get the cd working, haha. But I did get the roms working. I've been trying to get better at it, but root is so hard for me.
My root gets hard too.... wait.... we're not talking about the same thing, are we?
Review nod's fantastic instructions
here. They were good enough for me to get some CD games working in mednafen.
Ootake only plays PC Engine roms like the other emulators out there. Only Magic Engine for some reason plays the American games.
I can't speak for Ootake, as I've not used it, but mednafen hasn't had any problems with the few US hucards that I've thrown at it.