Periodic Backups to a remote Windows Server folder with OS X I need a tool that will allow backups of specific folders to a remote Windows Share. The Macs connect via SMB or CIFS, meaning AFAIK rsync is out of the question.

I only need it to backup on folder, but having it automatic would be preferable.
If the remote (Windows) filesystem is mountable in the Finder than any application that does file level backups should work. I use SuperDuper and have used Carbon Copy Cloner and Chronosync in the past with good success. 

Note that CCC backs up to either a Mac filesystem or a DMG (disk image) file which may be problematic on a Windows PC with no Macs around.