Windows 7: Backing up libraries (on D:) and also specifiying the D: drive

I am using windows 7 with internal drives and an usb external drive. Some of my Libraries (picture, music, and video) are on the D: internal drive. When I use windows backup to backup my libraries and also specify to back up my D: drive, am I backing up two copies of my D: libraries?

On the "let me choose" screen, if you open the "tree" for the D drive (click on the caret next to it) when you have it checked, if you look at the detail, does it have checkmarks by the PHYSICAL library folders you have on D? I assume you have checked Libraries at the top under DATA FILEs.

Hence, if they ARE, simply deselect them under the D drive tree.

It's a damn good question, BTW....

Yes, libraries are checked at the top and they are checked in the D: "tree". I just wasn't sure what backup was doing. I'll uncheck them in the D: "tree". Thanks.