Thanks for the fast response!
I had gone the template mapping route but had got mixed up and overriden the Generic Content module (Telerik.Cms.Engine.WebControls.Admin.ContentItemNew) rather than the Generic Content Page editor (Telerik.Cms.Engine.WebControls.Design.GenericContentDesigner) template. All sorted now, great stuff.
Apologies for the vagueness of my second question. The 'blogs' option is not appearing in the navigation of the modules section in admin. The options I see are
- Generic Content
- Images & Documents