Help Making Comments Box Required field

[mrgtih2]

I've searched the forums, Googled the question, searched contributions and read a couple of posts that didn't answer the question.

 

Can someone please tell me how to make the comments box a required field from the checkout_shipping.php page?

 

I would like to have people input an approximate delivery date that they want to have their order shipped. Can I make the comments box a manditory field or would it be better to add another text field and make it manditory? We ship fruit from FL and need this as a function from the checkout procedure. Please help US!

 

Thank You!