welcome to just answers.
Try to access your routers web page by going to 192.168.0.100.
user name =admin. password= password
If that helps you please click accept and have a Merry Christmas..
I agree that was my first thought defective device, I would return it and get a new one.
If you look on Net gears web site for the WN604 it has the users manual and on page 12 of the manual it states " The access point is set, by default, with the IP address of 192.168.0.100 with DHCP disabled."
Thats why I was advising you to use that address .
you can view the manual here--> http://www.downloads.netgear.com/files/GDC/WN604/WN604_UM_14Oct11.pdf
Hope that helps..and dont forget to click accept..
Have a Merry Christmas