HELP REQUIRED: Firewall blocking Internet Explorer

I have Norton SystemWorks 2008 Version: 11.0.3 runningon a Toshiba Equium laptop with Microscoft Vista.  I also have Apple iTunes, and while reconfiguring SystemWorks folloing a iTune update managed to block all Internet Explorer use (but managed to mintain access to iTunes).  The only way I can get onto the internet is by switching off SystemWorks firewall!  How can I allow IE to run with SystemWorks again?