Why is it that my web browsers do not work now that I just installed Kasperky 7 antivirus protection

The connection is fine but both firefox and internet explorer just goes to a blank can't display this page screen when I try to run them.

Why is it that my web browsers do not work now that I just installed Kasperky 7 antivirus protection?antivirus

1 of 2 things call the company that makes it for tech support or switch to a different firewall. one that i just learnt about is a program called comodo. its free and alot of schools use it. here is the link http://www.personalfirewall.comodo.com/

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