POLL: Multiple Voting - Checkboxes Instead Of Radio Buttons?

Hi. The script is working great. I need to be able to allow visitors multiple votes on the same page, though. For example, if they were going to vote for/select 10 things of the list and vote for all 10 at once. Then, they will not be allowed to vote again. Will this work? To clarify: If I made the radio buttons check boxes, how would I allow multiple enties into the db, and how would the script deal with them? Thanks very much.