Should I demote or trust?

I run a 30 computer 2003 Domain( Company) with two DCs.   My Company has merged with a smaller company whos five employees who are going to be working in our office starting next week.  Their network has one Small Business server 2011 and have their own domain (New).

I orginally planned to demote their server, move it into the 2003 domain as a  member server.  Like wise move the new workstations into my domain.

Now I wonder would I do better to Trust the two domains and move nothing.  

Which would be better?

Will haveing 2003 Domain and a 2011 Domain in a trust make for, perhaps authentication Issues? Would the NEW domain be able to print to devices in the Company Domain?  Would DNS have to be updated in some way?

Thoughts appreciated.
oldgaryAsked:
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SandeshdubeyConnect With a Mentor Senior Server EngineerCommented:
There were wo option for you either use ADMT to migrate users/computer to your own domain or create new account and join machine to domain.

As the the opposite domain as SBS server you cannot create trust and without trust ADMT will be not possible.So to have to create new users in your domain for these employee and join machine to domain and do profile migration.

See this about SBS limitation:http://blogs.technet.com/b/sbs/archive/2007/10/04/debunking-the-myth-about-additional-domain-controllers-replica-dcs-in-an-sbs-domain.aspx
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valmaticConnect With a Mentor Commented:
For that few computers i would move those new pcs to your domain, then look into making that server be part of your domain and eventually the main active directory server since it is newer.
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MaheshArchitectCommented:
Just recreate those 5 accounts
demote active directory and add it as a member server
why to manage trusts and DC only for 5 computers

thanks
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LearnctxEngineerCommented:
Yes I agree. For 5 users/computers you're complicating things. Just create them new accounts in your domain, migrate their data and mail to your environment. Decommission their domain.
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oldgaryAuthor Commented:
Thank you all for these helpful and thoughtfull replies.

So does this sound right:


Log onto the SBS server as admin and run DCPROMO to demote the DC

Join the SBS as a member server to the corporate domain.

Create the Five user accounts.

Assign accces priveleges for the five accounts on the now Member SBS server

Join the Workstations to Corporate Domain.  Map Drive ect to the old data.

Have users sign in.

Now as to what Sandeshdubey alludes to when mentioning "Profile Migration"  Can I have the new WS profiles reflect their current data without haveing to import it into the new Corporate profiles?  

Thanks for all this help help.
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SandeshdubeySenior Server EngineerCommented:
I am not sure but it seems you cannot have SBS2011 server as member server in domain.You can add it as DC but then you need to place the FSMO role on SBS server also you need to check the licencing part.

Regarding the profile you need to do profile migration as domain will change.
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oldgaryAuthor Commented:
Oh Dear.

This is more complicatedt than I thought.

Would I do better then to just join it to the Company Domian and move the roles?

Or is this a new question?
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oldgaryAuthor Commented:
To answer the first question  it appears that a trust is not possible.

To answer the second question it cannot be demoted.

This leaves me with Sandes solution of joining it to the domain.

This is no small step since I am bascially raising my domian from 2003 R2 to SBS 2011.

Thanks for everyones help even if was not good news.

I am going to close this question start a new one with a title something like:  How to join an already configured SBS 2011 server into another Domainn
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