I currently have a Linksys 802.11b wireless router and an Orinoco Gold WiFi card in my Dell notebook. If (when) I go with a Mac, it will likely be either the 17" PowerBook, or an updated 15" PowerBook. I'm happy with the performance of the Linksys router, and don't want to replace it or purchase an Apple base station. I know that 802.11g (airport extreme) is backwards compatible to 802.11b. As I understand it, this means that if I have a 802.11g base station (router), a 802.11b card will talk to it (but won't be able to make use of the speed and encryption of the 802.11g). But does this mean that a 802.11g card (airport extreme built into the powerbook) can talk to the 802.11b base station (router) and work like my current 802.11b card?