i was trying to ping www.google.co.uk to see what would come up, but it always says destination host unreachable. I typed into cmd exactly... 'ping www.google.co.uk'. I tried with different websites and they all say the same.help?

First, try the IP address instead of the name (64.233.161.104 here). If this works, you have a problem with DNS. If it doesn't work, you should check to see if the ping program is being blocked by your firewall or router.