quoted from http://www.ChicagoTech.net
How to modify Node Type
1. For W2K/XP, go to HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Netbt\Parameters to make change:
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
If this key is present, it will override the DhcpNodeType key. If neither key is present, the system defaults to b-node if there are no WINS servers configured for the client. The system defaults to h-node if there is at least one WINS server configured.
2. Windows 95, go to HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD\MSTCP
Name: NodeType
Value type: DWORD
Valid range: 1, 2, 4, or 8
Default: 1 (b-node) if no value is specified or no WINS servers are configured on the network; 8 (h-node) if WINS servers are specified and NodeType is not otherwise defined in the Registry.
If DNS is enabled (which also enabled LMHOSTS in Windows 95), name resolution will also follow the mode defined by this parameter. This value can also be configured using DHCP.
How to modify Node Type
1. For W2K/XP, go to HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Netbt\Parameters to make change:
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
If this key is present, it will override the DhcpNodeType key. If neither key is present, the system defaults to b-node if there are no WINS servers configured for the client. The system defaults to h-node if there is at least one WINS server configured.
2. Windows 95, go to HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD\MSTCP
Name: NodeType
Value type: DWORD
Valid range: 1, 2, 4, or 8
Default: 1 (b-node) if no value is specified or no WINS servers are configured on the network; 8 (h-node) if WINS servers are specified and NodeType is not otherwise defined in the Registry.
If DNS is enabled (which also enabled LMHOSTS in Windows 95), name resolution will also follow the mode defined by this parameter. This value can also be configured using DHCP.