how to: copy a CD to another CD which is blank

Using Windows Explorer (in Windows 7 64Pro) I see no familiar "disk copy" command to automatically make a backup copy of a CD or DVD that is currently in my DVD burner.  How can I use Windows Explorer to copy a disk that is in the D: (DVD) drive?

(I have tried various combinations of this question in the Help menu installed with Win 7 w/o any answer that remotely addresses this very simple [and I must assume common] question....similarly, I found no answer at the Windows 7 home page...)

Diskcopy is a DOS facility. Since Windows arrived some 25 years ago, you do these things with a graphical user interface rather than with a command.

Open two Windows Explorer frames, then drag the DVD item to wherever you want it on your hard disk. That's all.

Beside the answer given by Pegasus - as far as I remember, discopy has been removed als context menu command in Windows 7 (because it was only used for floppy discs in previous Windows versions).

Ok...upon further investigation, I suppose the only way to perform a "disc copy" to to drag all the contents of the CD to a folder set up for that purpose on C:, remove the original CD, insert a blank CD, drag all the files back to D: and click: "Burn to Disc"...a bit more cumbersome but workable...and, I did spell disc as disk....so, I need to be more careful with my questions...

Windows 7 does not have a direct "CD Copy" function but some third-party programs do, e.g. ImgBurn (www.imgburn.com).