Found this small nugget of information quite hard to get - so I think others might find it useful as well. How to install the Authorization Manager administration MMC on a Windows XP machine.
If you use the Windows Server 2003 Authorization Manager, you might find it interesting to know that you can install the AzMan runtime (short form for Authorization Manager) on Windows 2000 as well. The problem there is that even after you install the runtime it is hard to configure the Authorization store without a good UI. The Windows 2003 version comes with a nice UI but not the Windows 2000 version. So your best bet might be to configure the store via a Windows XP machine since you can install Windows Server 2003 Administration Tools Pack and then point to the XML authorization store on your Window 2000 box.
Now all you need to do is simply type “azman.msc” from the Start -> Run prompt and off you go!