2Wire Gateway 3600GHV modem - problems with Wireless connections

I just signed up for UVerse internet, and received the subject modem.  The internet itself works fine, though I'm having trouble configuring the wireless connections.  My computer in which the modem is connected to has Windows XP, and I tried the "Wireless Internet Setup Wizard" under "My Network Places", but it doesn't seem to recognize the wireless connection.  The directions in the manual don't seem to match Windows XP.  The wireless green button on the modem is not turned on, and our smartphones are not picking up the wireless signal.

Any help or guidance would be appreciated...thanks!