KMS on Windows Server 2008 r2

I have a few questions about KMS. Some of them I think I know the answer to but want to be sure.

As far as I understand I can issue this command on a windows 2008 r2 server, and it will then become a KMS server: C:\windows\system32\slmgr.vbs -ipk <volume license key>

If I enter a windows 2008 r2 std/ent key I will be able to active servers that use the same key.
If I want to activate vista, win7 clients and other server version, do I just issue the command once more to add other keys?
What about office kms keys?
ReneDKAsked:
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Andy KeeneyCommented:
once per product key and this includes Office 2k10, just make sure you have a service location (SRV) dns entry pointing to your KMS server.  it will read something like _VLMCS  and the server FQDN will be in the data field of the DNS entry.
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Andy KeeneyCommented:
KMS will work with VLK and MAK keys issued from Microsoft including the ones for office, professional, and server OS's .  i use the Volume Activation Managemetn Tool (VAMT) (http://www.microsoft.com/downloads/en/details.aspx?FamilyID=ec7156d2-2864-49ee-bfcb-777b898ad582&displaylang=en)  from Microsoft to manage my KMS.  it is important to remember that your KMS will not start to issue keys until it gets a certain number of requests (i think it is 4 or 5).

and yes you only have to issue that command once per key.
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ReneDKAuthor Commented:
I know the limitations of KMS clients... 5 servers, 25 desktops etc.

Now I'm even more confused.

Do you only enter the kms keys on the server and they will then be issued to the clients... or do you enter them on the clients aswell?
Do I need VAMT to run a KMS server

Again: If I want to activate vista, win7 clients and other server version, do I just issue the command once more to add other keys?
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Andy KeeneyCommented:
you only enter the kms keys on the server and it will distribute them out, just enter the command once.  VAMT is a MMC snap-in so that you have a gui for KMS server.  
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Andy KeeneyCommented:
you dont have to have VAMT installed.
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ReneDKAuthor Commented:
and by saying once, you mean once pr. product key?
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ReneDKAuthor Commented:
including office 2010
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ReneDKAuthor Commented:
Yep ok. Thank you for your help.
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ReneDKAuthor Commented:
oups, one last questions. Say I currently have 5 servers with MAK keys. How to I change them to use the KMS server, since you say you don't enter a KMS key on the servers except from the actual KMS server
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ReneDKAuthor Commented:
google told me I need to use slmgr /IPK xxxxx-xxxxx-xxxxx-xxxxx-xxxxx

but that's the command for setting up a kms server and you told me not to use the KMS key on the clients that need to be activated... now I'm confused again.
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ReneDKAuthor Commented:
I got some answers here

http://technet.microsoft.com/en-us/library/ff793434.aspx. Still not sure on how to go from MAK to KMS as my understanding is that /ipk installes a KMS server instead of instructing the client to active through a KMS server.
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