Let me give you an example
http://www.google.co.id/search?q=ikt
The search result for my site (ikt.co.id) is ranked first, and have additional sitelinks (4 links, for about, news , etc)
But because my site is extremely new I still dont have the access to Sitelink under 'Site Configuration' on my Google Webmaster 
That is what I am trying to say that this configuration will not always be available to all 
Here is the message i've got
"Google has not generated any sitelinks for your site. Sitelinks are completely automated, and we show them only if we think they'll be useful to the user. If your site's structure doesn't allow our algorithms to find good sitelinks, or we don't think that the sitelinks are relevant to the user's query, we won't show them. However, we are always working to improve how we find and display sitelinks."
Which is quite false, because google has indeed generate a Sitelink for my site but the configuration is not available to me (webmaster) yet 