Question : DHCP over a vpn

Does anyone know if I have 4 Networks connected using Vpn adsl routers, if the 4 servers within those seperate networks all being at least win2k Server with DHCP enabled will start dishing IP address out accross the Vpn's to the other Networks or am I safe from this sort of conflict as I am aware of what happens when more than 1 dhcp server can do on the same network.

Answer : DHCP over a vpn

DHCP broadcasts will not traverse a VPN.  Such traffic is limited to the local subnet, so you will have absolutely no problem in this regard.