I have setup a new Windows Server 2003, in fact the only one on this network. I have AD, DHCP, DNS, TS and VPN running. I have 10-15 clients (all WinXP Pro) that will eventually be connecting through a VPN. I have created user accounts on the server and so far have just added them to the users group (except myself, I also added myself to the administrators group). I am currently in the process of adding each workstation to the domain, and have done so successfully. I can browse the network by using both UNC and through "Network Places" successfully. When I go to add a domain user to the local administrators group on any of the PCs, and click on the "locations" tab I only see the local computer. However, if as soon as I login, I go to the local administrators group it shows up for a second then either disappears or when I choose the user it tells me "the domain is either not valid or it cannot communicate with it. So it looks like it initially gets a "entire directory", but then looses it. I have tried different user accounts (local and domain). I am not sure if it is a rights issue, communication issue or a setting issue on the new server. Unfortunately, time is against me, so any help on this would be greatly appreciated. Thanks alot in advance!!