Block CMS Type for topic?

It is possible to insert a topic into a topic from administration back-end?

That is : I create a topic A with an image. Then I must insert A into topic B.

like an usercontrol. It's info modified from backend.

I think this https://www.nopcommerce.com/boards/t/5463/help-how-create-a-simple-box-on-the-left-side-bar.aspx
is from to start...

I think this https://www.nopcommerce.com/boards/t/5463/help-how-create-a-simple-box-on-the-left-side-bar.aspx is from to start guide...