I'm trying to get an HP laptop running Win7 to see a desktop running WinXP on my network (both wired and wireless) When I run the troubleshooter in Win7, it tells me "system clock does not match local time" as the reason. I have a Belkin wireless router attached to my cable router. I have updated the system clock via the internet on the desktop and checked the time setting in BIOS. These seem to match. I have googled around on this and can't find any accounts similar. My son's Vista laptop and the Win7 laptop have seen each other since day one. The laptop and desktop did see each other at one time, but the connection was lost after I went to a hotel and changed public network settings temporarily. I can ping the desktop from the laptop, but it times out when pinging the laptop from the desktop. I'm running an avast firewall on both, but can't see a problem there. Any insights would be appreciated.