QuickForm hierselect - need to implement 3 levels of company policy pulldown selection - help with design?

I have a set of policies I need to implement. The rules have 4 levels: Policy Title Category Sub-Category Policy Ideally, I'd like to have four pull down menus that would walk the user through choosing the policy. Currently I have ONE database table with the four fields but I wonder if it would easier to implement hierselect if I had four separate tables each with its own key field. Any ideas of how to implement this and db design are MUCH appreciated ____________________________________________________ Start your day with Yahoo! - make it your home page http://www.yahoo.com/r/hs