Merg and steve053 described two different approaches to this problem. You should follow one or the other, and not try to combine the two approaches.
Have you ever logged into your netgear's configuration pages? To do so, you
1) Need to attach an ethernet cable from your PC to your netgear router.
2) open your browser on your PC, type the router's IP address in the browser's address window. (example: 192.168.0.1, 192.168.1.1)
3) Once you login, you should see the place to turn off DHCP, give the router a name, set a password, etc.
Once you have configured the netgear, you can disconnect it from your PC and place it where you want it to be. But as it has been said before, make sure you connect the netgear to the 2Wire with LAN ports, not the WAN port. Once you have made the netgear into a wireless access point, it will be just another network device, like your DTV receivers, printer, or computer.
Yes, I've logged in several times to my Netgear's configuration pages, particularly to set passwords, etc.
I agree that I think I was trying to combine both Steve's and Merg's recommendations as one.