Changing Layout for forum startpage

Hi,

I'm running the corporate theme with bbpress an buddypress. I would like to change the way the forum page is displayed.
right now its the categorys an then the forums more or less in a row:
link

but I would prefer each forum in its own row with a link to the newest topic / reply behind it.
more like this:

is there a way to do this. or a good documentation helping me?

Thanks Patrick