Sync your files online and across computers – Dropbox
It’s a pretty simple concept.an internet drive that allows you to sync your files between multiple machines. a small application is installed that monitors a folder on your hard drive. Dropbox monitors changes to that folder and if a file is updated it is pushed up to your virtual drive . If you have multiple [...]
Dropbox is my favorite program. It's incredibly easy, FREE, and provides me a great way to back everything up. , ...
http://blog.wickasitha.com/2010/03/microsoft-sync-%E2%80%93-keep-files-in-sync-across-computers/