The Windows Vista edition you purchase determines its basic feature set, and a standard installation makes all those features available without asking you (or allowing you, for that matter) to pick and choose. In addition to these core features, a small set of advanced and specialized features is available as well. To review this list and enable or disable any of the features on it, open the Programs menu in Control Panel and click Turn Windows Features On Or Off (under the Programs And Features heading).
Compared to previous Windows versions, the number of available options is extremely limited. The Windows Features dialog box, indicates which features are available for your edition. A check mark means the feature is currently enabled, and a blank box means the feature is disabled. If you see a filled box, the feature is partially enabled; click the plus sign to the left of the entry to see more details about it.