Hi
If you type at your browser url window(ignore underscores): _http://212.58.227.73_ Do you get the BBC webpage displayed?
If so then it is a DNS issue in Windows or router possibly. If not then it is likely to be IP related. Try and configure fixed IP address under Network settings for the network adapter and ensure that the default gateway entry is configured (under 'Advanced' tab in Internet Protocol TCP/IP properties window for the network adapter in use) as are the DNS servers, both primary and secondary .