I don't know how to add a source on kismet?

I'm fully aware of my complete and utter noobdom. That said, I cannot find an explanation on Google or these forums on how to add a source to kismet. I run kismet and it tells me I have to add a source. I'm pretty sure that I would add my wireless adapter as that source, but I don't know what to put in for the "Intf", "Name" and "Opts" fields of the "add a source" window. Is there some command I run to get this information from my wireless adapter? I'm using the WG111v3 on Backtrack 5.

Enter wlanx , where x=your interface number (0,1,...) old ieee802.11 driver stack
or monx , where x=your monitor mode interface (0,1,..) only works when new mac802.11 driver stack is used.