Setting up Wii:
1) Go to Wii Settings.
2) Click on Internet.
3) Click on Connection Settings.
4) Click your Connection and method of connection.
5) Click on Manual setup.
6) If wireless then enter or select your SSID and enter your wep/wap key.
7) At the Auto-Obtain IP address select NO and then Advance Settings.
8) Enter the following:
DNS: Primary 188.8.131.52, Secondary 184.108.40.206
9) Click Save and then OK.
10) Test Connection.
Try this first before we get to the router setup. What model Netgear do you have? Please list full model number with version.