Win Server 2008 & 2003 - AD trust domains

I have an initiative this year to move our AD environment from Windows 2003 over to Windows 2008.  Since our company has grown & changed I decided to build a completely new AD forest & domain that better reflects my company, and over time just phase out my old 2003 AD domain.

My question involves setting up a Trusted Domain between the new AD domain, (AD-2008), and the old AD domain, (AD-2003).  What is the best and SAFEST way to configure a trusted domain relationship between these two domains so that I can go workstation by workstation & user by user to move them over to the new domain?

I want to make this as seamless as possible, BUT my FIRST priority is "safety", meaning I do not want to risk in any way, corrupting or impacting my existing AD-2003 domain.

Any help would be appreciated,

thank you,
Jeff
jgrammer42Asked:
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Darius GhassemConnect With a Mentor Commented:
You can setup the trust either way it doesn't matter. You will not corrupt anything at all the only thing you are doing is giving the domains a way to see each other. Think about it this way you are building a tunnel for data travel to each other.
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Mike ThomasConsultantCommented:
There is only 1 real way to create a trust and it does not involve anything that could damage either AD it bacially a trust means that account in one domain can be trused in the other.
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jgrammer42Author Commented:
MojoTech,
What way would that be?  External or Forest? Two-way, One-way incoming, One-way outgoing?

Would allowing the Win/2008 wizard to create the trust on both the AD-2008 and AD-2003 domains have any negative impact at all on the AD-2003 domain?  Should I create the trust from the AD-2003 domain and have it create the trust on the AD-2008?  Or should I create the trusts independently on each domain?

Thank you,
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Mike ThomasConnect With a Mentor ConsultantCommented:
Two Way Trans will do it for you.
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jgrammer42Author Commented:
Thank you both!

I appreciate the input!

If I run into any issues, I will repost.
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