Re: How to add different style to the first post?
If you are willing to look at the source after the first post is added, you could add styles to suit that post to your css.
something like:
#thread #post-3 .threadpost { background: #7CFC00; }
#thread #post-3 .threadauthor img { display:none }
#thread #post-3 .threadauthor { background: url(images/question.jpg) no-repeat 0 0; width: 80px;
height: 80px; }
should work ok for that page.
other than that, i’m sure you could find a jQuery solution to find the first post in a thread & style it.