WonderDesk SQL Help Desk Software Screenshots
Contro Panel - Database Editor - Field Editor

This is a nice, web based, graphical interface that lets you modify or add new fields to any area of the WonderDesk.  This let's you define all of the settings of the field (also known as a column in the SQL world), including the field name, type, default value, if it's a required field or not, size, etc.  This gives you the power to add new checkboxes, radio buttons, drop downs, text fields, text area fields to your WonderDesk.  Not only does it update the WonderDesk, but it also creates/modifies the field in the SQL database (so you won't need to know SQL commands).