DFS - Windows Server 2008 Mode in Windows 2003 R2 AD Domain?

My AD environment is Windows 2003 R2, and My AD Schema is Version 31. I have 2 member Servers runing WIndows 2008 Storage Server Std with DFS installed that communicate accross a WAN. I want to setup DFS replication between these 2 File Servers. When I go to create the DFS Namespace, the box "Enable Windows Server 2008 mode" is greyed out" I had asked a previous question about this on experts exchange and the expert told me that if my domain functional level was at v31 I was OK....Any thoughts?
keamalsaSystem AdministratorAsked:
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louisreevesConnect With a Mentor Commented:
You windows server functional level in 2003 would have to be one of the levels on the article below, namely, the 2003 functional level.

http://technet.microsoft.com/en-us/library/cc738038(WS.10).aspx

This fact renders any 2008 mode items "grey". This means you will have to move to move all your rolles to 2008 and then demote yout 2003 server in order to dcpromo the 2003 domain to 2008.

Here are a couple of ecamples for you

http://technet.microsoft.com/en-us/library/dd365353(WS.10).aspx
http://social.technet.microsoft.com/Forums/en/windowsserver2008r2general/thread/9955bdfc-749a-4600-ae98-aad44b7bbd22


I hope this helps

L
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keamalsaSystem AdministratorAuthor Commented:
This is the question I asked previously on experts exchange.
http://www.experts-exchange.com/OS/Microsoft_Operating_Systems/Q_26386142.html 
Please read the answers to my additional question given by aoakeley and arnold.
They seemed to imply that the ""Increased scalability and access-based enumeration when used in Server 2008 mode" would be available if my schema version was 31 or higher....Or did I read their answers wrong..?
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keamalsaSystem AdministratorAuthor Commented:
this is from technet
http://technet.microsoft.com/en-us/library/cc770287.aspx 

Under..
Choosing a domain-based namespace mode
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To use the Windows Server 2008 mode, the domain and namespace must meet the following minimum requirements:

The forest uses the Windows Server 2003 or higher forest functional level.
The domain uses the Windows Server 2008 domain functional level.
All namespace servers are running Windows Server 2008.

If your environment supports it, choose the Windows Server 2008 mode when you create new domain-based namespaces. This mode provides additional features and scalability, and also eliminates the possible need to migrate a namespace from the Windows 2000 Server mode.
======================
Looks like I should be able to choose this mode....?
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