I just did it the other day. No pics, but it's simple. Find the power steering pump. Directly on top is a hose with a 90deg composite fitting. One bolt is holding it down. Undo the bolt and pull the fitting straight up. Some fluid will come out, but just quickly just raise the hose up above the reservoir and seal it with your thumb. Sometimes the O-ring will be on the fitting or you may have to fish it out of the pump. Replace O-ring, re-install fitting, and top off fluid if necessary.
If you're going to go that far you might consider flushing the power steering system. There is a post in the Walkthrough section detailing how to do it. It's not that much harder.
Part# 34439FG000 was ~$2 at the dealer.