|It must be a DNS issue, i'll assume your using win xp and wired cable to your router.|
Go to start/settings/control panel double click on "network connections"
Double click on your local area connection, if you have more than 1 local area connection then you should be able to work out which is the active connection, click properties, click on internet protocol tcp/ip, click properties again.
Click the "use the following dns server address"
And type this numner in there 188.8.131.52 without any dots so 208 67 222 222
click ok, then click ok again and try the website