I can help out some perhaps...
I, too, have wireless set up at home. I have not enabled WEP, but I did turn broadcasting off. When you do that, you need to set the essid and key manually.
To set the essid, use
iwconfig eth1 essid essidname (where essidname is the name of your SSID)
To set the key, I believe (but am not positively sure), use
iwconfig eth1 key keyvalue (where keyvalue is the value of your encryption key)
Obviously, switch out eth1 with the name of the network device to which it applies (e.g., eth0, etc.)
Once you've done that, if you haven't already started the DHCP daemon, use
dhcpcd eth1 (or whatever network device you have)
Hope that helps.