Thank you everyone for your response.
As for games, Mario anything, Kirby, Lego anything, Donkey Kong, Zelda, Pokémon.. etc...
I've downloaded some Roms in hopes of having a card. I thought I read supercard two can play DS and 3DS? It doesn't matter if the 3DS cant play the DS games as well as 3DS, they can resort back to their DSI if they want to play those. Just figured it would be nice to be able to put both 3DS and DS games on one card for them.
My kids are pretty good with electronics when shown how to do something, they learn pretty quickly.
What I want; to be able to download 3DS ROMS and be able to play them on the 3DS. 3DS machines were purchased refurbished from EB Games within the last month. I will get back to you with version etc. later this evening when I have a chance to look at settings, hopefully with that info, I can be led in the proper direction of which way to go.
Thanks again
L