custom application configuration panel

Hi ,

wondering how to add custom application configuration panel  for a group so that it will be available in the fly out panel for both forum and blog post .

Requirements

  1. Create an option under manage forum / manage Blog Post like "Custom Setting"(same as group options) . This option should be available for only group owners / Administrator.
  2. On "Custom Setting" screen i would like to give some input fields .
  3. This values should be stored as an extended attributes.

Thanks

Satish kumar