Firefly has now released the wireless passme solution and drivers. To be able to do this the Wireless Mulitboot Hack you need to have either the RT2500 or RT2560 chipset. Heres a <a href="http://ralink.rapla.net/" target="_blank" >list of compatible ones.</a>
The download and screenshots of this excellent release can be found <a href="http://nintendo-ds.dcemu.co.uk/passmehack.shtml/" target="_blank" >Here</a>, theres also a faq <a href="http://www.aaronrogers.com/nintendods/wifime.php" target="_blank" >Here</a>.