Add database to script #3

I'd like the script available here - [login to view URL] - modifying so that I can login as admin and create puzzles. These puzzles will then be publicly accessible via a php page ([login to view URL] etc). To create the puzzles we need to enter a ''win'' number (this is the target number) and then the elements available to the puzzle are added (numbers, operators etc). Finally we need xy positions to place the components - would prefer this drag and drop if possible. Require categories for puzzles for user navigation. Thanks, Richard