Almost found the perfect accessory for the 9210. According to this article in WirelessSoftware, a Wi-Fi SD Card is now available. Now, if only the 9210 supported SDIO cards and Ethernet drivers.
The card will support Win2K, WinCE (v2.11 and higher), Palm OS (OS 4 and higher) so if you have PDA or smartphone with SDIO memory card slot - then you will be able to experience Wi-Fi without the need to use bulky CF Wi-Fi cards. Anyway: Wi-Fi is the most convenient and fastest wireless way of communicating for PDAs and other mobile computers... and those of us who have only SD (not SDIO) and MMC card slots, will look with envy on this superb piece of engineering.