Hi, Pardon me if you think I try to make things complicated. The classroom has 12 PCs with Windows Server 2003 and XP on different drives or partition. I want to devide my classroom network into 6 subnets. I want each subnet (of 2 PCs) to have its own DHCP server to lease IP address out to the other server. 1. Is this feasible? And how would I go about doing this? 2. There are two server funtioning as domain controllers. One is the NAT router. One is the RIS server. Can I have both DNS and DHCP on the NAT router? Can I make the RIS server also a DHCP server? 3. The NAT router has intranet NIC configured to the APIPA (169.254.0.0) address. I tried not to use the 192.168.0.0 as I don't want to take away the school's private network. How do I go about using the 192.168. network without worrying about taking away the school's private network. Look forward to your expert advice.

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This sentence "I want each subnet (of 2 PCs) to have its own DHCP server to lease IP address out to the other server." doesn't make any sense. Servers shouldn't get dhcp addresses but be staticly assigned. "How do I go about using the 192.168. network without worrying about taking away the school's private network." You have 192.168.0.x to 192.168.254.x to work with NAT. Simply find a x.x.?.x subnet that the school is not using and use it for your classroom. clasrm[192.168.?.x]<>natsrv<>school subnet Give a person a fish, they eat for a day. Suggest they internet search and they learn a skill for a lifetime.

you mentioned that you don't want to use the 192.168 networks, so why don't you simply use either of the class A 10.0.0.0 (subnet 255.0.0.0) class B 172.16 (subnet 255.255.0.0) networks?