Double-click on it to uninstall WinPcap. WinPcap 2.02 or older: go to the control-panel, then open the "Network" applet. If WinPcap is present in your system, an entry called "Packet Capture Driver" will be listed (in Windows NT you have to choose the "Services" tab). Select it and press "Remove" to uninstall WinPcap.