Linked post

My site is pretty much done, but I’d love to figure out how to do what splatf.com, daringfireball.net, and loopinsight.com are doing: being able to create a post title that links to an external page. Basically, it looks like a regular post, but clicking on the title leads to a paged I link and there’s a graphic to the right of the title that, when clicked, leads to the actual post page.