My computer (desktop HP P4 3GHz with XP Home SP2), has some kind of software issue that doesn't allow other computers to see shared files or the shared printer. It gets listed on the Mshome network, but when selected it gives the error message: "\\thisComputer is not accessible. You might not have permission to use this network resource. Contact the administrator of this server to find out if you have access permissions. The network path was not found". The last part of the error message may say also "The semaphore timeout period has expired." I am currently using wired and wireless (with a 2Wire router) connections, both work perfectly to connect to the Internet, and the desktop can access other computer's files (at this moment only a laptop with XP), but only to read. I have tried disabling the firewalls on both computers (Zone Alarm, Windows), but nothing changed. When on another network with a different (wired) router, the same thing would happen with the desktop, therefore it's not a router or its firewall thing. Both computers are configured to be assigned IP addresses automatically, as well as the DNS server address, DHCP is enabled and the default gateway is the router. Both have different names on the network and can ping each other. They are on the same workgroup and use the subnet 255.255.255.0. For me it looks like some part of XP got corrupted on the desktop, but there's no way I will reinstall it. Does anybody knows of something else I can do before giving up on this? I tried HP's tech support, but reinstalling XP comes up very fast.