Hilary,
This is great! Thanks for the tip. If I use a datasource, like an XML file for instance, to populate the checkboxes, will it still work? I guess that's where I've been hitting a roadblock. I will try it using this method, but perhaps you know if that's doable OOTB?
I have basically several of these multi-selection list boxes, one for each region of the country let's say and in it are hospitals that exist in that region. So, the northeast has 20-30 hospitals, southeast has 30-40, etc. My XML file populates each list box with the choices. One trick I did take from another one of your posts was to use the Plain List Box control on the view that I needed to see output and it allowed me to grab all the selections. This works great for my print view, but the technique you're showing me in this template would be great to write files to another control to pass onto a workflow or something like that.
Let me know if this is possible using the datasource. Thanks so much! :)