Add recent activity to frontpage

Does anyone know how i can go about adding the sites recent activity to the homepage?

i know its prob not that hard at all. just dont know where to start.

i guess this cant be done :))))

Uhhh, what piece of activity do you want to display?  When you say "sites", do you mean some part of your site like articles, members, photos, etc?  Or do you mean sites like websites that members add?  Need more info about what you want to add.