The Airport Extreme BS wil be backward compatible with 802.11b (IIRC) but you won't be able to take advantage of any of the 802.11g until you get the new Airport Extreme Card. I doubt the cards will fit into current hardware as the connector looks different but I could be wrong. It looks like we'll need to look at a whole lot of hardware upgrades (or adaptors) before we get to make use of 801.11g capabilities.<br><br>