Hello.
I am a little bit confused what issue with adding new 
cms.news document do you have? When using our default 
Corporate site ASPX web site template, 
cms.news document type is pre-defined, so you can add a new document of 
cms.news document type in 
CMSDesk -> Content section, if you click „
New“ button and choose  „News“ document type. What exact problem do you have with this, please?
As for „direct interface“ – how this new interface should be different from current interface, called CMSDesk, please? 
If you want to create 
news documents from live site, you can use 
User contribution (Wiki) module (
http://devnet.kentico.com/docs/devguide/user_contributions_overview.htm), or you can do it via 
API: 
http://devnet.kentico.com/docs/devguide/creating_documents.htmBest Regards,
Radek Macalik