How to add incrementing numbers to file names?

Hi!

So, how do I add incrementing numbers to file names? This must be so simple and yet I don't see it.

Old filenames:

movieclipABC.mpg
movieclipDEF.mpg
movieclipGHI.mpg


--> New filenames should be:

001 movieclipABC.mpg
002 movieclipDEF.mpg
003 movieclipGHI.mpg

Please, any help? thanks in advance!

---

It's all explained in the User Guide.

www.advancedrenamer.com/user_guide/method_add
www.advancedrenamer.com/user_guide/tags
www.advancedrenamer.com/user_guide/tags_default

---

Reply to #2:
Ah, I see. "Tags", yes. Somehow I think such a basic function (add numbers to files) should be more in the "Add" Menu, it's a little hidden for my taste, but of course, once you know where it is everything becomes simple.

But thanks a lot anyway!!

---