A little while back I ordered a WiFi transmitter pack for the EOS1 D bodies, nobody in the UK had them in stock, and Canon couldn’t or wouldn’t commit to a delivery date. I was looking forward to the challenge of setting it up with both the PDA and Powerbook.
I have spoken to a few other togs that have tried them (both the Nikon and the Canon variants) and they have mentioned that there are a few difficulties with setting them up reliably. One of the users suggested that every time there is an Security Update with OSX is throws all the settings out. However I remain cautiously optimistic that the transmitter will work with the PDA.