I've always wanted to be able to do this.
Sorry, I am unable to explain in words as I don't know what the term is for this, but I think it's something to do with sitemaps.
Anyway, I've attached a screenshot.
What I want to do is be able to make my site links appear like they do in the screenshot. How would I tell the search engines to do this?
I have a gut feeling it's something to do with the sitemap but am not sure. Any help will be much appreciated. Thanks.