Change klients from MAK to KMS key


I'm just curious to know. Say you have configured a KMS server after you've installed 100 clients with a MAK key. What procedure would you use to change all existing clients to use KMS instead of MAK. My only idea is to run a script at login.

At first I thought: why not just leave them alone and just let re-installed clients use KMS. Well, KMS will only let clients activate after 25 clients have contacted the KMS server. This might take a signicant amount of time before 25 clients have been installed. This seems like a really strange procedure to me, but maybe someone can explain what the idea is?
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Adam BrownConnect With a Mentor Sr Solutions ArchitectCommented:
You can actually use the Volume Activation Management Tool (VAMT 2.0) to replace the keys that are installed in machines after Vista/2008. It's available here:

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