You would need 2 GBA's with link cables as i don't think you can connect a DS to your Gamecube? No idea if you could use your Wii with 2 DS's but maybe possible. VGP have the game in stock for about £18 including delivery.
ok - the most convenient way would be for the DS/Wii to work. But I suspect this is a long shot as the DS wifi probably isn't active when playing GBA games.
In which case I would need a US cpy of the game, 2 GBAs and 2 link cables.
It plays great with 2 players, as pointed out though its quite an expensive setup for one game. I dig it out from time to time when my god son is round with his GBA.
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I'd love to list all my really cool AV equipment here but I feel too ashamed and embarrassed...
Proud owner of Xbox 360, PS3 and Wii!