[Fidel]

Himera
От  себя. Возможно у тебя отключен NetBIOS over TCP/IP.

Об остальном - цитата из Help:

To test TCP/IP connectivity by using the net view command, open Command Prompt, and then type net view \\ComputerName. The net view command lists the file and print shares of a computer using Windows XP by establishing a temporary connection. If there are no file or print shares on the specified computer, the net view command displays a There are no entries in the list message.
If the net view command fails with a System error 53 has occurred message, verify that ComputerName is correct, that the computer using Windows XP is operational, and that all of the gateways (routers) between this computer and the computer using Windows XP are operational.

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To further troubleshoot this connectivity problem, do the following:

Use the ping command to ping ComputerName.
If the ping command fails with an Unable to resolve target system name message, then ComputerName cannot be resolved to its IP address.

Use the net view command and the IP address of the computer using Windows XP, as follows:
net view \\IPAddress

If the net view command succeeds, then ComputerName is being resolved to the wrong IP address.

If the net view command fails with a System error 53 has occurred message, the remote computer might not be running the File and Printer Sharing for Microsoft Networks service.