Currently have Win2k with the root domain as mycorp.com and one sub-domain of us.mycorp.com. Now the company changed names about a year ago and we want the domain name to reflect that change. We decided against waiting for Windows 2003 to come out and change it, for various reasons I won't get into. Instead we are going to create an entirely new tree, with the root domain as newcorpname.com and sub-domains for each geographic area us.newcorpname.com, uk.newcorpname.com, ca.newcorpname.com, etc. Then create a trust between newcorpname.com and mycorp.com and gradually move everything over and finally get rid of the old domain tree. The problem that someone brought up is that we can't have two domains with the same name (ie "us"), now technically the domain name is us.newcorpname.com and us.mycorp.com, but you really only see the "us" part in the domain. For instance during logon from a workstation the domain field just reads "us". When we setup the trust how are you suppose to differentiate between the two domains, can we?