Is there a hack similar to a database of occupations by city, or
 

What i would like to do is, people can list in a database where they are located, and what business they are in, and then, the person searching the database can search by loaction, or by occupation.

for ex: A musician forum.
You use a pull down menu to select the state or area, and the pull down menu to select occupation, like guitar player, and then press search to get results.

thanks

we call this a Yellow Pages generator... there is some in the php universe, but not for vBulletin yet!