1. a text field and add button for adding new users to the db
2. a select field listing users in the db
3. ++ and -- radio buttons
4. a vote button for adding a + or - vote to the selected user
5. a show button to display users and votes made on them by you

The database could be a simple listing of user|sum_of_votes or something more complex that records the sequence, time, node, etc, of each vote in a voting history.

I'm kind of busy and don't know what you want so think you should write it and earn the ++ votes you'll deserve if you do it well.

have fun - epoptai