I have two laptops a Ti powerbook with an airport card and a sony laptop with a PCI Belkin 802.11b card. The powerbook connects fine with the basestation, but the sony does not even see the airport basestation. I have it set up for dhcp and it is set for 802.11b only. I also have a linksys wireless router at my office which the sony can connect to without any problems, so the computer and card appear to be fine. Can Windows machines use Airport basestations?