How to change main page slideshow.

The network theme has that nice slideshow that shows all of the other sites on the network. (Awesome.) What I need to do is change what image and text is generated for the subsites.

Were it shows an image from a post on the subsite, I’d like it to display a logo from the subsite.

Were it has the post excerpt I’d like it to echo ‘bloginfo(name)’ and were it currently shows the subsite’s name, I’d like it echo ‘bloginfo(description)’ .

I imagine this will be pretty easy to do, if I knew which file to edit. I do not know which file to edit.