OK thankyou. If you could try very hard to answer the questions in my previous post it will certainly help towards finding your problem. It means you might need to look your devices upside down or to the side, etc. to find out the info, but it's important.
I'm not sure but what you mean by LW 4.2.2 b/c it hasn't been released yet.
Did you configure your XP firewall:
Firewalls instructions (click on link) to allow LW access thru it.
Is your comp connected via a router (multiple output) modem or is your connection via a lan network?