XBOX wireless woes

Archived from groups: microsoft.public.broadbandnet.hardware (More info?)

I am trying to lock down my network so I recently went from disabled
wep settings, to 128-bit web. There is no settings->advanced->wireless
on my xbox dashboard. I lost the DVD that came with the xbox, so I
have no idea how to change my SSID or even add my WEP key, because its
NOT THERE. Any help is appreciated. Do i have an old dash or
something? I have googled the heck out of this problem, and I haven't
been able to find anything that helps. I CANNNOT find the wireless
settings on my dash board. Help!