Doesn Windows Vista support file versioning?
Yes. However the versioning in Vista is quite a bit different than the versioning supporting in Document.Versions. First, Vista versioning is included as a part of the file backup system and is not intended for the document authoring scenarios for which Document.Versions was designed. Second, the versions created with Vista backup are kept on the computer on which the backup was made. The versions do not travel with the document. Versions created with Document.Versions are compatible with Vista versioning.