Wireless problem

ive used the macafee wireless security to protect my network. So i press the PROTECT button. When the power turns off and on and tries to connect on my network it says Validating... (i forgot the message).
Then i accidentally uninstall the macafee including the macafee wireless security. I didnt UNPROTECT the network yet before the macafee uninstall. Now im trying to connect again but it says WINDOWS CANT FIND CERTIFICATE TO LOG U ON TO THE NETWRk. and sometimes validating but the icon below was connected, but i cant use the internet explorer. Could that be because of MACAFEE or something wrong with the Belkin? Please Help...