Sorry about the vagueness of the topic, I couldn't think how to word it and at the moment I'm pretty clueless about Active Directory except in very broad concepts

We are currently an entirely NT4 domain based shop. Before the end of the year we will have started the migration to AD, probably Windows 2003 based.

I have a remote site in another country which needs to rebuild their server, and wants to rebuild as AD to get the benefits now rather than wait a year when we will be ready to integrate them.

Seems reasonable enough to me with the proviso that they will need to provide all the support themselves until we get AD skills up to speed here.

The problem is that their domain will be a sub-domain of the corporate domain.

The question at last - is it possible for them to configure AD locally as part of the corporate structure even though they do not have access to the root? If so, how much buggeration will be caused when they join and (presumably) mandatory settings are inherited?

Hopefully that made some kind of sense - any pointers to relevant white papers gratefully received.