Please let me know if i can create a custom forum using a Bizform.Please let me know if there is any approach to create a custom forum?Please let me know how can i add new field to the @Reply@ form...

How to add a custom field on forum group webpart.A user can reply to forum post by clicking on the @reply@ link.I want to add a new field to that form.Please let me know how to add a new field to t...