I managed to get the capturing laptop configured and authenticated to my wireless router (WPA). I also got my second laptop authenticated but didn't see any of the association/authentication packets when I ran Wireshark in BT3. I set the capturing laptop wireless in promiscuous mode. This is Intel PRO/Wireless 2200BG.
I ran the test again but didn't authenticate my capturing laptop first. It didn't make any difference as I didn't see any traffic when the second laptop authenticated.
Finally, I captured traffic when the capturing laptop authenticated. All I saw were a series of EAPOL frames. There were no beacons, probes or frames containing the SSID. I have seen a pcap file of the authentication process so I know that these additional frames should be present.
I just wonder if my Intel Wireless card isn't playing nicely with Wireshark. Any tips? I hasten to add that this is for my own education, rather than illicit activity in a coffee shop (etc.)!