Display text on one post and one post only?

I need to show text on one post, but I don’t want this text to show up if the post is on the main page, a category page, or any other page that might bring up the post. I need this text to show up on the single post view and that page only. Is this possible, if so – how?

Thanks!!

-Les
Zaldor’s World Podcast
http://www.zaldor.com