Check my sig for vehicle specs.

I'm a total n00b when it comes to sussing out vehicle problems but i figured out today that there's ATF leaking from my power steering pump. it only leaks when the engine is running.

i'm pretty good with mechanical things, and i've successfully made some hose and wire replacement and other minor under-the-hood repairs, so i know that if this kind of thing is simply handled (like replacing a hose, for instance), and I was pointed in the right direction i could take care of the problem myself.

any hints on how to go about assessing the problem further?

thanks!