internet explorer

Would you please supply a little more information? How do you connect to the internet (modem, DSL, cable, etc.)? Have ever been able to access the internet on this computer? If so, did anything change (ISP, modem, nic, any hardware changes/additions, operating system, etc)

I second the previous post. Without a little bit more information, it is nearly impossible to give you a clear answer.

A couple of things you might try:
1. ping 66.94.230.44
2. if that is successful, ping www.yahoo.com

If both are successful, there are some configuration issues, i.e. firewall, security settings, etc.
If the first fails, you aren't getting out to the internet at all.
If the second fails, you aren't resolving DNS requests, indicating an issue connecting to your DNS server.

More information would be helpful.

What operating system are you using? You might have to repair the Winsock, but without more information would not know which version to point you to.

Go to Start, run and type in CMD to get to the command prompt.

Type Ipconfig /all to see if you are getting an IP address other than 169..... If you are getting a 169. type ipconfig /release and then Ipconfig /renew. If you get a message stating An operation was attempted on something that was not a socket, it means the Winsock files have been corrupted. Go to a machine that is working and download Spysweeper (webroot.com)and Aluria Spyware Elminiator (http://www.aluriasoftware.com/homeproducts/spyware/) and download a program call Winsock Fix (http://www.bu.edu/pcsc/internetaccess/winsock2fix.html). Go to Microsofts Knowledge Base and search for Article number 318584. Reboot the messed up machine in safe mode and install the spyware programs and run them. Do the Microsoft fix and then run the Winsock fix program. The winsock fix will reboot the machine. Once rebooted do Ipconfig /all again to make sure the right IP address is coming up. If it does try to access the internet.