Planet Planet and feeds

A while ago I asked for some help incorporating external feeds into WordPress as if those feeds were posts (basically turn a WordPress blog into an online consolidated feed reader).  I was referred to Planet Planet and to Planet WordPress and that looked like the kind of thing I need.  The catch is, I have no idea how to implement that.  Can someone help me out with this?  I would like to use this type of thing to consolidate the feeds from three of my blogs into a fourth.

Any help would really be appreciated!

//