[support] Need to send mail after post a new forum topic

Hi All, My scenario is, I am using drupal 6 and I have added advanced forum into it. So in this while I add any new forum topic or reply any existing forum then, I need to send mail to all user in my site. Mail contains name of post-user, link of forum posted and content of forum. So can anyone give me some hint about this. -- Regards Swatee Amit Karpe