Making check boxes "required"

[Anonymous]

Hi Everyone! 

I'm setting up a newsletter sign up page, where we're hoping to use multiple single check boxes to indicate a subscription to the corresponding newsletter.  These boxes map to custom fields in salesforce that are also check boxes. 

The problem we keep running into is making the check boxes "required".  We don't want to allow people to submit the form without having at least one of these boxes checked, but if we select "required" in forms 2.0, you have to check off the boxes.  I'm guessing that this might be solved with some kind of script in an html box on the landing page?   I've suggested going with a select box to make things easy, but the web team is pretty firm on making these check boxes. How would you guys approach this problem?