виж какво намерих докато се ровех за твоя проблем
http://www.michna.com/kb/wxnet.htm
на английски е, но ще се оправиш. не съм го пробвал, но изглежда интересно - нещо като уизард за разрешаване на мрежови проблеми с XP и 2003.

и ето това е последната артилерия, дано не се уплашиш

NetBIOS node type
Another related and surprisingly frequent problem beside disabled NetBIOS over TCP/IP is the setting of an unsuitable node type for Windows networks (which use NetBIOS). If you don't see other computers in Network Neighborhood or My Network Places, then this computer may have the wrong node type. If you get error messages when you try to access another computer, then you may have to walk over to that other computer and perform the following steps there.

First check the node type by opening a command line window and typing the command

ipconfig /all

This command reports the node type, among other information. It should be Hybrid or Unknown, but not Point-to-Point (p-node, actually a mistaken interpretation of Peer-to-Peer), because that would work only when a WINS server is present.

If the node type is P-t-P, you can use regedit.exe to go to

HKEY_LOCAL_MACHINE
\System
\CurrentControlSet
\Services
\Netbt
\Parameters

and delete any of the two values NodeType and DhcpNodeType if they exist, forcing Windows to fall back to its default node type, which should be Hybrid. Reboot.

Additional information about these values:

Value Name: DhcpNodeType
Value Type: REG_DWORD - Number
Valid Range: 1,2,4,8 (B-node, P-node, M-node, H-node)
Default: 1 or 8 based on the WINS server configuration
Description: This optional parameter specifies the NBT node type. It is written by the DHCP client service, if enabled. This parameter determines what methods NetBT uses to register and resolve names. A B-node system uses broadcasts. A P-node system uses only point-to-point name queries to a name server (WINS). An M-node system broadcasts first, and then queries the name server. An H-node system queries the name server first, and then broadcasts. Resolution through LMHOSTS and/or DNS, if enabled, follows these methods. If this key is not present, the system defaults to B-node if there are no WINS servers configured for the network. The system defaults to H-node if there is at least one WINS server configured.

Value Name: NodeType
Value Type: REG_DWORD - Number
Valid Range: 1 - 8
Default: 1
Description: This parameter specifies the NBT node type. It is an optional parameter that, if present, will override the DhcpNodeType parameter. See the entry for DhcpNodeType above for a complete description.

More details can be found in the following Microsoft Knowledge Base article.

Default Node Type for Microsoft Clients
http://support.microsoft.com/kb/160177/

A general description of the workaround can be found in the following MSKB article:

You cannot view other workgroup computers on the network on a Windows XP-based computer
http://support.microsoft.com/kb/903267/

The cause of the wrong node type is unclear, but there is the suspicion that Windows itself changes the node type to P-t-P when the computer is brought into contact with certain DHCP or WINS servers, for example when a portable computer is connected to a company network, perhaps when it joins a domain that has a WINS server. If so, then the typical victim should be a travelling laptop computer.

2005-03-22 – Doug Latornell wrote that he observed that the Intel Netstructure VPN client changed this setting and didn't change it back when uninstalled. Thanks, Doug!

2005-12-25 – Jurko Gospodnetić wrote: A DHCP server may be set up to automatically change the NodeType setting to some value (and amazingly it can do this without a reboot – like you'd have to if you changed this value manually in the registry). Networks with a Windows domain do not need to use broadcasts for their name resolution, so their DHCPs are sometimes configured to set NodeType to P-t-P. This, of course, does not change back when you return to your small office working with a Windows workgroup.

Thanks a lot, Jurko. This information had still been missing.

Редактирано от нoчнoй_дoзop на 01.12.06 22:20.