Multisite subdomain not working

How do I get my sub domains working? I created the network, added a couple subdomains, but cannot access either one of the subdomains. I was under the impression that creating them via the network new site feature, would replicate wp content from the root domain? Is this incorrect? Or perhaps I have it setup not quite right... Thanks! By the way, is there a way to create a subdomain with different (less) plugins than root, that would act as a starter site, and to use that to clone new sub domains...