I'm on AT&T U-verse 12 Mbps plan. I have a 2Wire Gateway 3600 HGV WiFi Router and HP Pavilion Elite HPE-400f PC. The Internet Access icon says I'm on 802.11g. How do I turn on 802.11n? I went ahead and enabled Adhoc Support 802.11n, but the Internet Access icon still says I'm on 802.11g. So what do I do to turn on 802.11n?