I am designing a Win2k domain structure and would like some input. The main site is not a problem; I am running a domain controller and backup controller with no issues. Where it gets interesting is my WAN locations. I have 15 locations that need to authenticate to the domain and in case the WAN link is down need to be able to attach to a local Win2k server. Each WAN location only has about 8 computers besides the local server. I really do not want to have to make each local server a controller, as this would give me a total of 17 controllers. All workstations are Windows XP so they will come up using cached information if the main site controllers are not accessible. How can I get to resources on the local server (mapped drives from domain login script, etc) while the main site controllers are not accessible? Any input into how to best configure this will be greatly appreciated.