I am using three computers at my home all connected in network. In first Comp Windows XP is installed, in second Comp windows vista and in third PC has Windows 7 is installed. All Computers are in same network. All Computers can see each other on network. I can ping Comp from other Comp. I get the problem while accessing shared file on windows from windows 7. I get the error the computer not accessible. Contact Admin of this server. But I can same shared file from Windows XP. Any help will be appreciated. If any information let me know.