Disable your XP firewall. XP & NOrton will conflict. Then see * Configuring Norton Internet Security

If you have an adsl/dsl/cable or sat modem or router, please tell us the device brand name & model number.

Do this simple test for us. Using your browser go here: http://www3.limewire.com:6346/ The page should say 'Your test worked!'. What happens when you go there?

BTW if you bought pro then you also have the option of contacting service support for help.