Need help adding a widget area

Hello All,

I need some help. I am using the Edublogs hompage theme for a clients site, but I need to remove the "Currently Powering # of sites" thing in the header right area of the home page removed. I want to replace it with a widget area for showing a banner ad.

I want it to be a 468x60px widget space

I just need some help knowing what to delete from the header.php file, and what code I need to add in order to have that space be a widget area instead.

note: I have created a child of the edu-clean theme and I'm working on these files in the child-theme. I don't know if that affects the code replacement or not.