migrate users

I have two Windows ADS 2003is a.com the other is b.com

A and B are physical connect vpn there not trusted yet (there two physical domains)

I was wondering how I can move user from domain a to b but at the same time still having access to domain a for the short term

I assume the first step is to establish two way trust

Then use admt tool but I do not know iof that enough for if that still allows then access to the old domain and also I need to migrate there email from A to B but I believe ADMT will good enough to do that

Please help and confirm

Thanks