Wrote this in official topic but nobody replied so i am making thread to bring attention because i really need help. Sorry if its breaking forum rules!

I want to add more content in blank space.

I highlighted the area i want to put some content with red color, so you can have idea what i want.

Here is the picture:

http://tinypic.com/r/3480lep/6

I would appreciate if you tell me step by step which .php and .css files i should change (note all .php files have original names that Matt has made).

Any help is appreciated.
Thanks in advance.