I’m unable to locate a working plug-in/snap-in for Active Directory Users and Computers that works on Windows 7. Fortunately, there’s a workaround that allows administration of ADUC in Windows 7 with a little modification.
First, you’ll need to download and install RSAT for Windows 7. It’s found here. You’ll need this before you can do anything else. Once this is installed, on your Windows 7 box, open Programs and Features and click the Turn Windows Features On or Off option. In the Windows Features box, locate Remote Server Administration Tools and expand the item. Expand Role Administration Tools, then expand the AD DS and AD LDS Tools item, then the AD DS Tools item. Check the box for AD DS Snap-ins and Command-line Tools. Click Ok and those features will be enabled.
The ADUC shortcut will be placed in your Administrative Tools under Control Panel just like it used to be.
Also note, this is for the 32 bit versions only. This hasn’t been tested on 64 bit, and others have complained that they couldn’t get this working on 64 bit.
If anyone else has a better method of administering ADUC on Windows 7 Pro please feel free to post a comment. Until then, hope this helps someone!