My current needs are that I want to back up the files on one hard drive to anther but the files/directories are not organized the way they should be so I want to be able to have a program look at directory 01 on drive A compare it to directory 02 on drive B and copy and replace only the files that are newer over to drive B. Make sense? Does this type program exist and if so is there a free version. I will get into organizing my drives correctly later... just gotta do this for now.