So I have been trying to figure this out for a couple days. I'm stumped. I am running a home network. I am not using a domain. I have turned on sharing permissions for a media folder on my 2003 server. I have a Window 7 machine on my network. I can see the shared files on my Windows 7 Machine from my server just fine. But when I try to open my server from the windows 7 machine. I get Windows cannot access\\SERVERNAME... Check the spelling of the name. I run the diagnose wizard and it says Can't find "SERVERNAME". I have read numerous forums and have gotten to the point where I installed Link Layer Topology Discovery (LLTD). Then restarted. Still nothing. Can't change firewall settings because Ipnat.sys is running. I have set up new rules in Windows Server 2003 to allow ports for UDP and TCP according to an article I read about Windows Vista machines not being able to communicate with XP machines. I have run out of ideas. I NEED A GURU PLEASE!!!??!!!