I'm trying to develop a small PHP/MySQL site for our intranet, and I'm just starting to learn how to do all this.

One of the very first things I'd like to do is to create a mock-up (non-working dummy) of some of the forms I'll be using on the site.

These aren't very complicated forms, but they're somewhat long.

I've been searching for a free or OSS program which would help me drag-and-drop form elements, and create the form graphically, rather than going through the tedium of writing it from scratch. I didn't find any such program.

What do you guys use when you want to design a form quickly? What would you recommend for a newbie?