1. Open Internet Explorer.
2.Click the Tools drop-down arrow in the upper right corner of the browser window. Select Internet Options.
3. In the Internet Options window, click the Connections TAB. Click the LAN Settings button. If the check box next to the "We use a proxy server for your LAN" option has a check mark, your PC accesses the Web through a proxy server. If there is no check mark in the box, your computer is not using a proxy server.
If you do not have a proxy server and want one, it is recommended that you look at a given reliable proxy provider.