meh, i hacked together this app in about 25 minutes. it essentially turns the wii off to Red (Standby), so WiiConnect24 isn't running, and so ninty (if they ever chose to) couldn't update the System Menu without us knowing.
http://www.mediafire.com/download.php?3m0lmgxm3ly
http://www.mediafire.com/download.php?3m0lmgxm3ly