Well, my brain is fried with trying to get this combobox stuff to work so, what would I have to do to have several checkboxes that share the same variable.

For example:

Poll: Who is your favorite actor?
Let's assign the variable "actor" to the checkbox.

box1 = Joe
box2 = Mike
box3 = Robert

BTW, it needs to make sure that ONLY one of the options are selectable. So if the user selects, Joe and tries to select Mike, Joe will turn off and Mike will now be selected.