One of the key new features of Windows Vista is a component called the Kernel Transaction Manager (KTM) that brings inherent support for transactional development in not just the kernel-mode but also for user mode. Infact, NTFS has been enhanced to use and support transactions such that couple of new APIs (e.g. CopyFileTransacted, MoveFileTransacted just to name a few) have surfaced up. You can get more details on Transactional NTFS here. To demonstrate the power of the new APIs, I wrote a C++ class...