Recommendations for CMS

I'm thinking of adding a CMS to my server. Anyone use any and which would you recommend. Or should not use a CMS? Pros? Cons? I'd like a CMS that would allow my to hand tweak, or one that doesn't do wierd stuff with the files. I'd like something that uses php. Also, looking for a simple easy to use calendering system. I could roll all this myself, but why re-invent if there is something useful. Thanks, Brian D. __________________________________ Yahoo! Mail Stay connected, organized, and protected. Take the tour: http://tour.mail.yahoo.com/mailtour.html