heres the info :P

download either the selfboot or the binary ( knowing you youll probably want to do the binary ;P ) from here.

http://bswirl.kitsunet.org/vmutool/r...?lg=en&menu=on

stream it to your dc and then do the following.

http://bswirl.kitsunet.org/vmutool/r...?lg=en&menu=on

you can also change the bios bg to whatever you like

http://bswirl.kitsunet.org/vmutool/r...?lg=en&menu=on

i believe the max image size is 128x128 ( thats for the hi-res version which takes up the most blocks ) and it has to be a png