I giving this a while with Post Nuke.
For me it's an UP HILL CLIMB!!
Still I did get it up and running. I installed the .764 version and the .80 rc1 version, I would say at this point, stick with the .764 version. It's stable, stuff works, and there is some help out there for it. I would call it “user friendly” on the admin side. Also, I had to get my hosting service, iPowerweb, to get me on a newer version of mySQL I must say though, it looks like it could be lots of fun for you and your users, in my case, me and me. From reading other posts around, the Joomla program is very popular.
Please post back your experiences.
Best of Luck,
Pat Jr.