You should check out 'Winner's Circle'
yes u can get them at best buy
http://nds-roms.com/ www.mininova.org is very good for games. it has over 7100 versions of games
3ds
an English ds plays American games, so i say an Australian ds would
There are many good guides for playing video games on nds. Most of them are found on you tube you cant miss them.
Games-engine or hkorz
Yes, a Nds games, Heart Gold and Soul Silver
No, a licensed NDS game should not affect the 3DS is any way because the 3DS is backwards compatible and can play NDS games
It all depends on what you like to play, and what you want to use them for. They both have very very good games, and different functions, so it is up to what you would like to do with them. For Multimedia purposes, I'd suggest the PSP, for popular games the NDS. But that doesn't mean that the PSP doesn't have popular games, just that the NDS has a larger variety of games.
A NDS stands for Nintendo Duel Screen. It is a game console that can play games. Really, how come u dont know.
.nds and you can download roms in that format.....
NDS Homebrew Hive.