Yes - All GBA games will fit into the DS or the DS Lite but won't in the DSi.(If you have a flashcard then it's 90% that you can't run GBA games on it.)
with vba
brothersoft.com
You have to have a GBA Roms.
its very hard to do.
There are no perfect rhymes for the word flashcard.
lolo
u cant
USB FlashCard was created in 2004.
Flashcard Exchange was created in 2001.
R4i card is a slot-1 flashcard, it can only play DS and DSi games. M3i Zero is a multi-media flashcard, it not only can play DSi games, but also powerfull in multi-media play. M3i zero card can also play GBA games.
First you need a GBA Emulator. Then find a site that you can download SAFE GBA Roms. You may also need to get an unziping software.