Not able to access Internet from any browser

Hello everyone,

I have a Windows 2003 server that I am not able to browse the Internet from. I thought the problem was in IE so I installed Firefox and still unable to browse. I confirmed IP, gateway and DNS settings are correct so I am certain the problem goes beyond the browsers. I am able to ping (internally) ip address so that part is working.

Any suggestions on what I can check?

Many Thanks
cj