Hi Randy,
first thing you have to make sure is that the radio you want to capture the trace with is set to Monitor Mode:
<AP of="" choice=""> --> Configuration --> Radio --> Operating Mode --> Monitor
Next, make sure to capture the correct channel.
After tha, go to <AP of="" choice=""> --> Tools --> Network Trace
Check the port representing the radio which you pot in Monitor Mode and "Start Trace".
You may not see captured packets until you "Stop Trace".
If your Destination was set to Local, the trace is locally captured on the AP and you can download it to your PC with the buttons at the very bottom of the screen: wither as ASCII or in (Wireshark readable) pcap format.
Hope that helps,
Ralf</AP></AP>