Edit posting form?

[rase2]

<div align="left">How would I edit it in certain sections of the board, eg.

Instead of the basic format of Just


Thread Title: |______________________|

Posting options & Smileys etc
Post:
_________________________________

|_________________________________|

I could add an extra compulsary field such as:


Thread Title: |______________________|

Thread Description: |________________|

Posting options & Smileys etc
Post:
_________________________________

|_________________________________|

Or something along those lines.

Or to take it further, Add a drop down option menu. If anyone could help it'd be much appreciated.</div>