At home I have created a wireless network and configured XP SP2 to do
simple file and printer sharing. Firewall is configured to trust the
local network behind the router.

When I'm on the road, what should I do to secure my laptop when
connecting to public WiFi spots? It would be a PITA to turn off
sharing on every folder I created for the home network.

What do you guys do to manage these two "profiles"? How do you do it?