Once envisioned as a minor upgrade to Windows XP, Windows Vista (formerly codenamed "Longhorn") first took on all-new importance in early 2002 when Microsoft decided to reach for the brass ring and make this upcoming Windows release an all-encompassing major upgrade with a new security architecture, a hardware 3D-enabled user interface, and many more exciting new features. Here's the first--and most comprehensive--Windows Vista/Longhorn FAQ ever created, constantly updated to include the latest information about this exciting release.