I think you have a good idea. Build out a new forest/domain model that will
fit both enterprises. Once you have this structure you should then be able
to use Active Directory Migration Toolkit (ADMT v3.1), a free tool from
Microsoft to migrate your users, machines, files and folders, etc... This
also will take into account Exchange, you will probably use exmerge to
export the users mailboxes and import them into your new storage group.
You will have to establish a trust first and then migrate the users across.
Establish DNS communications between the two forests.
Create a trust between the two forests
Download the ADMT Tool
ADMT Migration Guide
Perform the Migration
Webcast (The PPT is the only working piece for help now)
MVP - Directory Services
MCITP - Enterprise Administrator
MCTS, MCT, MCSE, MCSA, MCP, Security +, BS CSci
2008, Vista, 2003, 2000 (Early Achiever), NT4
Microsoft's Thrive IT Pro of the Month - June 2009
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