What dependencies does csvde require on different Windows versions, and how do I enable it on Windows 7?

On Windows Server 2003 csvde works by default, but starting from Windows Server 2008 you need the AD DS or AD LDS server role. On Windows 7 and later, you must install Remote Server Administration Tools (RSAT). For Windows 7 specifically, you install KB958830 (or enable automatic updates), then go to Control Panel > Turn Windows features on or off and enable 'AD DS Snap-ins and Command-line Tools' under Remote Server Administration Tools. After installation, csvde becomes available.