jhh979s, can you ping a website name or only an IP address? If you can run "ping 4.4.4.1" and it responds, but "ping www.google.com" does not, well, that would be a DNS issue. Either your ISP's DNS server is not working, your settings for the network are not set to obtain DNS automatically, or your DNS server that you set manually is not working. Try using a OpenDNS server, either "208.67.222.222" or "208.67.220.220" should work (ping them, and if you can ping them successful, you can use them).
P.S. To use the above DNS server, click on Start->Control Panel->Network Connections->"Local Area Connection" and go to properties, click to highlight "Internet Protocol (TCP/IP)" and click the Properties button, and then click the "Use the following DNS server addresses:" and input the two address I posted above.