How many sub domains do you have to have to get them to show like DP's I have 2 sub domains will they show like DP's in search results?
You need to start building good quality and getting links to your subdomains. Once they have authority Google will likely realise they are closely related and rank them together.
It's called SiteLinks, what you're talking about. You can read more about them direct from the horse's mouth. googlewebmastercentral.blogspot.com/2006/09/information-about-sitelinks.html google.com/support/webmasters/bin/answer.py?hl=en&answer=47334