Solved: Unable to connect to internet but can connect to router.

I have just rebuilt a laptop for a friend. I downloaded the latest drivers for the wireless connection from Acer website. They have installed correctly.

I can connect the laptop to the router by wireless and I can browse the local network and see the other PC's BUT the internet is shown as not connected. Windows 7 Home Premium 64Bit. Other wireless devices (iPad for instance connect to the internet fine).

I have re-booted the router.

Anyone got any ideas?