I just bought and hooked up my WNDR 3700 to my Windows 7 64-bit desktop PC. The initial hook up worked fine. It is upon REBOOTING, the next morning, when I discovered a huge issue: the WNDR 3700 puts TWO network adapters on my Win 7 64-bit desktop and one of them shows an address of 0:0:0:0. As this is a desktop, naturally, this is connected via a wired ethernet connection.
FYI: my Asus motherboard's ethernet controller (built-in) is the Marvell Yukon 88E8053 PCI-E Gigabit Ethernet Controller.
The issue is that there are NO internet connections possible in this way. The only workaround is to disable all the network adapters and reconnect - this will allow internet to go through for ONE SESSION ONLY, without rebooting. Once you, say for example, turn the PC off for the evening and go to bed, the next morning, upon rebooting, the 2nd network adapter shows up again (along with the proper, expected, usual 1st network adapter showing the correct connection to the router, and NO internet connection is possible.
Oddly, the wifi portion to my laptops work fine because there is no direct ethernet connection, only wifi.
Netgear's phone support was no help: they told me to return this wireless router!