gabor

i'd like to play the super mario bros(1,3,world, etc.) games in "proper" 60hz mode. what is the easiest way to achieve it? i do not own or want to buy a nes/snes. i know the virtual-console ones run at 50hz, so i thought maybe i should get the GBA versions (i have a DS somewhere), and play them there. so, 1. are the GBA versions "proper" 60hz? 2. is there some other way to play them at 60hz? thanks, gabor