Is there a freeware program that will let me compare files on my comp with files on a CD or thumbdrive to check which files are new? I always get things screwed up when saving things and end up taking a long time to resave all my files. I'd rather just pic out the new files from my comp and send them to my backup on the CDs and thumbdrive. Any ideas for a tool which will check all the folders and tell me what is different?