Make Text Boxes Required Only After selection of checkbox

Let me begin by saying I'm not much of a programmer. Here is what I need:

I have a form with a series of text boxes for "physical address" and "mailing address." The physical address is required, but if the user checks a radio button that asks "Use Mailing Address?" the mailing address needs to be required as well.

Right now I have two radio buttons, No and Yes. If they click Yes, I need the following five text boxes of the form to be required.

Is this possible?

Thanks in advance,
Melvins138

Hi Melvins138,

Please check this post. I think that has what you need.

Bob