PPC question for WP

Let's say I have a few hundred parked domains. I want to throw up a WP template, and sell my own ads to people and keep track of the clicks.

I can't seem to find a free WP plugin that lets you add YOUR OWN ads (not Adsense). Also, is there a program or plugin that would let me keep track of all ads on a few hundred blogs all in one place?

No one knows of a way to manage PPC on multiple blogs?