XP como un DHCP Server

http://technet.microsoft.com/en-us/library/cc962461.aspx

http://superuser.com/questions/25352/how-to-run-a-dhcp-server-on-windows-xp

IPEnableRouter


HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters
Data type
Range
Default value
REG_DWORD
0
1
Description
Enables IP forwarding to connected networks. When the value of this entry is 1, the system routes IP packets to all networks to which it is connected.

Value Meaning
0 Disables IP forwarding. The system does not route IP packets.
1 Enables IP forwarding. The system routes IP packets.