Can modded Wii play multiplayer over Internet?

Hi,

I'm planning to buy modded Wii. My concern is that can a modded wii play multiplayer over Internet? If it can, does it work with both original and back-up games?

Maybe it works with certain modchip, maybe it doesn't at all. I dunno. Kindly enlighten me.

Thank you

with original YES
with backup YES(if I remember well)

Can you remember the modchip brand you tested it on?

i used wiikey and played fine over internet multiplayer action