Wireless internet problems

I have a BT Home Hub and I can connect through to wireless with no problems. It allows me to connect to my work vpn whilst using broadband and also my outlook email. But when I go into Internet Explorer and try and access any page, it will not resolve it. It accepts the command but its like its not allowing it to receive the packets back to show the web page.

If I plug the wire in I can get to the internet with no issues.

Anyone out there know why this is blocking me from receiving data on the internet through my wireless.