Guitar Hero 3 on Nintendo doesn't exist. == GuitarHero DS was announced in Sept 2007. The game will use 3-D graphics and a new peripheral (still in design) for the Nintendo DS. Release date has not yet been announced.
It depends if the Guitar Hero 3 songs were released as DLC on GH: World Tour. There is no way to directly import songs from Guitar Hero 3 onto World Tour.
nope, only if modded. that would be the only way
NO
no
You can find a full list of Guitar Hero 3 songs from the Related Links below.
No, Guitar Hero 3 has no DLC, if you wanted to put new songs on it you'd have to hack it somehow. The new Guitar Hero: World Tour will have DLC though, you'll be able to download songs onto and play songs from your SD cards (they will probably let you download all the songs from the previous games). If you want more info on Guitar Hero: World Tour for Wii check out the Related Linksbelow.
no.. not at this time
No, Gamecube Is from Nintendo and The PS2 is From Sony.
Guitar Hero III was released on the PlayStation 2, PlayStation 3, Xbox 360, Nintendo Wii and the PC.
Officially, you can't.
you cant
Not.