http://www.wiimodwii.com/
"MiiTransfer is a small application for reading and writing data to the internal memory of the wiimote. Using this app you can easily transfer mii's from your wiimote to your pc, and back to your Wii. This is exciting, because now Wii hackers can begin trading Mii's using sites such as WiiModWii's Mii Transfer Station: http://www.wiimodwii.com/miis/ This was all made possible due to efforts by marcan and the author of WDML (WiiMote Data Management Library)."
"MiiTransfer is a small application for reading and writing data to the internal memory of the wiimote. Using this app you can easily transfer mii's from your wiimote to your pc, and back to your Wii. This is exciting, because now Wii hackers can begin trading Mii's using sites such as WiiModWii's Mii Transfer Station: http://www.wiimodwii.com/miis/ This was all made possible due to efforts by marcan and the author of WDML (WiiMote Data Management Library)."