I have it running functionally with my girlfriend and I.

We were both playing perfectly fine, however, how exactly do you play the game when you can't see inside buildings and so forth?

For example, when we walk into a building, it just shows our icons on our player portraits walking around a black space...we have no idea what's actually in the buildings or caves. Same thing sort of happens when you try to talk to NPC's or read signs, it just pops up with a text bubble saying "GBA".
I tried looking at the GBA screen for VisualBoyAdvance M and it never changes, all it ever says is "Look at TV screen".

Thanks.

EDIT: I should mention, i'm talking about the gamecube version (just requires GBA to play it for some reason)