Total n00b question

So yeah. This is probably the dumbest question any of you have seen.

Is there any way to wipe everything, including windows 7, off of my C drive, and only wipe the C drive?

Thank you in advance for any help.

So, let me get this straight, what you want to do here is wipe your entire hard drive, correct?

 

You can do it during windows installation.

Yeah, I just want to totally wipe my C drive, leaving my D drive untouched if possible, so I can install a new copy of Windows.

Gparted <3

^this