Is there an equivalent tool available for use in Windows 7? I just need to browse the membership of some small Active Directory groups that are deep within a huge hierarchy, so I can eventually write code to work with those groups. The Windows Server 2003 version of the installer works, but the resulting MMC snap in just won't start up.
EDIT: I'd like to preemptively strike against more requests to close the question. This is a tool that I assume many programmers use to assist in programming-related tasks such as testing code that modifies Active Directory content. There are tons of other questions about developer tools here on Stack Overflow.
For Windows Vista and Windows 7 you need to get the Remote Server Administration Tools (RSAT) - the Active Directory Users & Computers Snap-In is included in that pack. Download link: Remote Server Administration Tools for Windows 7.