How do I set up my WiFi?

I rely solely on WiFi for my internet connection. I installed OpenBSD on an old iBook G4 (hoping to refurbish it). So no network was set up on it. The install was successful, but I only have command line set up at the moment. I am using another laptop to write this.

The WiFi on the iBook G4 relies on non-free firmware (I believe it's for Broadcom Corporation BCM4306 802.11b/g Wireless LAN Controller). After the install, the iBook told me that it required two firmware files, those being bwi and radeondrm. So, as the instructions in the FAQ stated, I "manually download it to a USB drive or similar device, then use the fw_update(1) tool to enable it after OpenBSD is installed." So, I think I have all the necessary firmware installed, since I've seen no further complaints on subsequent boots.

I'm not sure how or where I should set up my nwid (the name of the WiFi connection) or my wpakey (my password).

From ifconfig, it appears that the important thing is "bwi0". Here's the current reading:

bwi0:  flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500
               lladdr 00:11:24:2a:46:f4
               index 1 priority 4 llprio 3
               groups: wlan
               media: IEEE802.11 autoselect
               status: no network
               ieee80211: nwid ""

So, if anyone can help me out, that would be appreciated.