Netplay for Game That Doesn't Support NWFC

[dishnet34]

I don't know if this has been answered yet (and it might have; I might not have done enough Google-Fu), but I was wondering something today: Is it possible to play a Wii Game on Netplay that does not support the Nintendo Wi-Fi Connection service (game in question: MLB Power Pros 2008, which has local multiplayer)? I was hoping to play it with some people I know from a forum about the game, but I'm not sure if it's entirely possible. Is it?