It seems there is a new target for the evil ones, getting viruses into someone's comp when you go to your fav wifi haunt, a cafe or whatever.
Here is a link to a site that shows what you can do to protect your own comp from this new kind of attack. Its called a 'bridge':
http://www.windowsdevcenter.com/pub/a/windows/excerpt/winxpannoy2_ch07_05/index.html?page=last