Exchange 2010 Prepare AD with 32 bit child domains

Looking to install Exchange 2010 in an environment that currently has 1 2003 Exchange server.  Active Directory is a mix of 2003 32bit, 2008 64 bit, and 2008 R2 64 bit.  There is 3 child domain all running 2003 32 bit.  During the domain prep it states that:

"If you're running the release to manufacturing (RTM) version of Exchange 2010, in each domain (including child domains) where you have the Exchange Enterprise Servers and Exchange Domains Servers security groups and therefore must run Setup /PrepareLegacyExchangePermissions, you must have at least one domain controller running any of the following:"

using article

The language sounds like you need to run the ad prep against each of the child domains but in our situation each child domain runs a 32 bit OS and the setup /pl, pd prepareAD run off Exchange 2010 which is 64 bit.

If I run the setup /pad will that update the scheme and push it out to the child domains and I am just over thinking the setup?

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Glen KnightCommented:
You can run the commands from the Exchange server it doesn't need to be done from the domain controllers.
It makes no difference if the OS that AD runs on is 32bit of 64bit, AD is AD

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Ap3579Author Commented:
Just to triple check

So running it once at the parent domain is all that is needed and I do not need to run at the child domains.
Alan HardistyCo-OwnerCommented:
This question has been classified as abandoned and is being closed as part of the Cleanup Program.  See my comment at the end of the question for more details.
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