Hi,
just today there is an announcement at Computex for a SDIO WLAN Card 54Mbit and AES, even LINUX drivers announced.
in German at c't: http://www.heise.de/newsticker/meldung/73707
" ... Die WLAN-Karte arbeitet nach Angaben des Herstellers mit den Betriebssystemen WinCE 4.2/5.0, PPC2003, Windows Mobile 5.0 und Linux 2.4. "
They don't give details about which specific LINUX 2.4 kernels, but looks good.
Would work if an SDIO driver for ZAURUS were available. I couldn't find out whether there is any driver available
Georg