I want to say you need to do something special for non-apple wifi products to work with an Airport. If you know otherwise, disregard that statement. As far as the mac address (like if the Access point is set to only allow specific mac address through (used as a secruity measure)) If it isn't on the card or packaging you should be able to get it through the wifi settings on the Ipaq. I had to RMA my wifi card so I can't tell you exactly, but i've seen the mac address listed when the device is initially connecting. I think the IP address recived from the access point eventually replaces it. If you go out of range of the access point it *should* display your mac address. I will say I've never heard of a card without the mac address printed on there. I think you have to under IEEE regulation, but I'm not positive.