I have two folders. both named Updates, one on a USB2 external drive, the other on a DVD-RW disc. Both contain all my updates/downloads that I wish to keep. I download to a folder on my D:/ drive, and when ready I copy to both the folders as a failsafe backup. I sometimes forget to copy to both folders, resulting in out of synch folders. Can anyone suggest a freeware programme that is simple to use that will enable me to synch the two folders to ensure that they both contain the same data. I am using XP Home. Many thanks.