"I've been having a real problem with my Wii. Aside from little inconsistencies like the way it burns through AAs, an iffy synching system, and the occasional mis-read in WiiTennis, I can't save games to my SD card. I tried my regular SanDisk 1G card that I usually keep in my camera...I can view the photos just fine, but when I go into the Data Management menu, all I see is "Wii" (with a Wii console on the button) and "Nintendo Gamecube" (GCN memory card). So I figured, "Okay, I just need an official card". So I bought one."
Error in the mailbag response for this question. The reason why this kids SD card is not operating to full capacity is because he hasn't installed any of the system updates from Nintendo. When I went home over Thanksgiving break I was trying to play Excite Truck on my brother's Wii, but I wanted to copy my save to his machine before I started playing. When I went to his Data Management window there was no option for an SD Card. I brought his machine upstairs, closer to the wireless router, and installed the updates. Brought it back downstairs and voila! SD Card support available. The mailbag response passed this part over, because maybe you guys didn't realize this, since all of your Wiis were updated from the first minute. For some reason, out of the box, full SD support isn't available.