How to Update Group Policy Templates

Here's my problem.  When I try to make changes to group policy, some options are not available/listed that are described on microsoft.com and elsewhere.  My diagnosis is that my group policy templates are outdated.  The filedates in the c:\windows\PolicyDefinitions folder are all June 10, 2009 and the latest for Windows Server 2008R2 appear to be July 2010 (See http://www.microsoft.com/en-us/download/details.aspx?id=6243)

I have two domain controllers, so I want to confirm that I should do these steps to update:

1) create the folders C:\Windows\SYSVOL\domain\Policies\PolicyDefinitions and C:\Windows\SYSVOL\domain\Policies\PolicyDefinitions\en-us (these do not already exist)

2) copy my current c:\windows\PolicyDefinitions (from a domain controller) to %logonserver%\sysvol\%userdnsdomain%\policies\PolicyDefinitions\ (and the en-us subfolder)

3) copy the downloaded ADMX template updates that were installed to C:\Program Files (x86)\Microsoft Group Policy\win72008r2\PolicyDefinitions (and also the en-us subfolder) to %logonserver%\sysvol\%userdnsdomain%\policies\PolicyDefinitions\ (overwriting anything that's already in that folder)

Here's the kicker, I am nearly certainly these steps will not screw up my current policies that are in place, but I want someone knowledgeable to confirm this before do these steps.  I don't want anything to go wrong!