no
Yes you can OR you can trade your Nintendo DS, $100 and 2 unwanted games for a Nintendo DSi.
Possibly. It depends on the store.
It is compatible with all DS games apart from any that require Slot 2, which the DSi and the XL do not have. (There is no such thing as a DSi XL specific game.)
The DSi is an enhanced DS, and all 'DS games' will run on it - in fact there are no such thing as 'DSi games' apart from any DSi shop ones, or the possible exception of a game that uses the DSi's cameras. However since the DSi does not have a slot-2, it means Guitar Hero can't be played on it, as that has a necessary add-on that requires the DS slot-2.
Yes, all you need are the games and 2 Nintendo DS or DSi.
No, only GBA ones. You cannot play regular Gameboy or Gameboy Color games on a DS.
in Australia if you go to game the 3ds costs $99 if you trade in a dsi XL console and any 2 ds games
There is no such thing as 'DSi XL' games. The closest would be DSiWare, and 'Monster Hunter' which requires a camera. Otherwise, a DS game is a DS game and will work on any model of the DS, DSi and the 3DS too, assuming it doesn't need slot-2.
The DSi does not have a Slot-2 like the previous DS and DS lite models, and therefore cannot play GBA games.
Yes, using Pal Park, you can migrate Pokemon from GBA games to Diamond, Pearl and Platinum, using slot-2 on a DS. However you cannot do it with a GBA itself, or a DSi. Only an original DS or a lite can do it.
A Nintendo ds and ds lite have a ds game slot and a gamepak slot(gameboy advanced games). A dsi has a ds game slot, 2 cameras(one on inside one on outside) and a SD card slot.
It has Settings, 2 cameras, it takes regular DS games, it has a voice recorder, and it has pizcto chat, and DSI shop, and it has internet