Id say you could either use an on-screen keyboard, someone would probably write some usb keyboard drivers, or you could even use the DS microphone to use festival, a speech-to-text application. That would be freakin sweet! The thing about the linux platform, is if its possible, someone will eventually do it. If you get a linux OS running on the Wii, you can then compile a playstation 1 emulator, mame or even (with qemu) run Windows from within a linux session... how freaky would that be. Ive seen a clip of WinXP run inside linux on a PS3. thats pretty whacky.