Wireless Network - Local Access Only

I have a Windows Vista machine, with a wireless network USB key, both the key and the router are by Netgear.

This would occassionaly loose it wireless connection, and report "Local Access Only".
Rebooting the PC did not solve this problem. I tried hard coding the IP address, sub net mask and gateway, but this did not resolve the problem.

Finally it did start again, I carried out these steps:
1) Rebooted the router
2) Disabled the network adapter
3) Rebooted the PC.

Then the network worked fine.

It may be that only steps 2 and 3 are required.

I still have to find out why it stops working after 2 or 3 days.