Thanks for your help guys. I managed to install HBC and found an app to transfer files from my SD card to my GC mem card.
Another question: is there a way to use GAMESHARK game saves from GC games on the Wii?
If not, is there a site that has game save files (.gci) for GC games?
I'm trying to get WWE Day of Reckoning 2 save file, Star Wars Rogue 2 save file, FX-Zero GX save file and a couple of others. The only ones I've been able to find thus far gas been Gameshark and Max Drive game save files.