Second Copy is the perfect automatic backup software designed for all versions of Windows, including 9x/Me/NT4/2000/XP/2003/Vista, you have been looking for. It makes a backup of your data files to another directory, disk or computer across the network. It then monitors the source files and keeps the backup updated with new or changed files. It runs in the background with no user interaction. So, once it is set up you always have a backup of your data somewhere else.
Highlights: Windows Vista compatible Windows Vista/XP style user interface Up to 256-bit AES encryption Two-way Synchronization FTP support Automatic detection/deletion during synchronization Enhanced compression Automatic scheduled copies E-mail notification Multi-threaded background processing Run as a service Universal Naming Convention (UNC) support Preview profile activity before running Password protect profiles Run profile when files change Archival of up to 25 old versions Disk spanning Run profiles at Windows shutdown