InfoPath Dev

I am working on a form where I would like one check box to be checked after a combination of other checkboxes are checked in the form.  And I would like it hidden.  I have a few different sections in the form, and each section has two or more tasks in it.  What I would like is after all the tasks have been completed, to have one checkbox be automatically checked to confirm all steps have been completed.  That is the control I would publish to my sharepoint library.  I also want to make it hidden, so that a user cant just check that box.

 Any help would be greatly appreciated.

 Thanks, Denise

No need to have a control that's never visible.  Just add a boolean field to your data source and give it the default value formula:

not((checkBox1 | checkBox2 | checkBox3 | ...)[. != 'true'])

 Or if your other checkboxes are in a repeating group, it's even easier:

not(repeatingCheckBox[. != 'true'])

Can you please explain your answer for me?  I am fairly new to InfoPath and so dont really understand.  By Data source, do you mean the 'Fields' section?  And where would I add this boolean field?  I am trying to create a new rule or I have looked at the properties and I dont see how I can add the information you mention.  I am working with InfoPath 2010.

 Thanks for your help!

Is your form a SharePoint list form, by any chance?

Jimmy's suggestion is to add a true / false field to your form fields, yes.