in case you lot were interested...
The latest wii-linux kernel supports SDHC
No one has written a wifi driver yet and probably wont be written for a while... hence muzers decision to try and add support for USB wifi adapters
The xorg drive can be found on tehskeen
There is around 66mb of ram available
You will not get KDE running on the wii.... at least not in any usable state
I still suggest you use wii-linux as a base and build off of it similar to how muzer has done... but remember you need to keep everything lightweight...