OK, I bet you see fifty of these every week, but humor me on this, 'cause I'm tearing my hair out. I'm trying to set up a wireless network. The Linksys router connects directly to the desktop, which is running XP Professional. The remote computer, a laptop, is running Vista. As things stand, both computers can use the Internet; the laptop can "see" the files on the Desktop over the network, but not vice versa. The XP Desktop doesn't even show the Laptop on the network. No matter what I do, I can't get printer sharing to work. To sum up: Desktop: Windows XP Professional Laptop: Windows Vista Home Linksys router Avast anti-virus, Windows firewall What am I missing here? What do I have to do to get file and printer sharing working properly, in both directions? I've set up networks before with no problems, but this one has me stumped. All help gratefully received.