CMS Limited viewing of Articles
 

Hi, i'm not sure if this is possible without modifications, if it is please could someone give me advice.

At the moment when non-registered users visit my site: http://www.galaxyofstars.co.uk
They can see the previews of the articles. This is good.... it's what i want. However, when they click the article to read the full article they can. What i would like is to prevent this and so a page comes up saying they need to register.

All i have been able to find so far is to block permissions for non-registered users from viewing articles. But I'd like it so they can initially see the preview article on the front page but not the full article when clicking it.

Is this possible without modifications?