Ideas for a central CMS?

[eluser]Tommy_DK[/eluser]
[quote author="jedd" date="1239573250"]then I'd recommend you go with an existing CMS - it'll save you much pain and time.[/quote]

It should not be hard to make a CMS that enables somebody to update, edit or delete a site. That is what they will need. The users are not very "e-ready", so the existing CMS are to complicated for them to use.

My problem is, that I would like to have the system centralised. I did it with ASP several years ago, and think that I should be able to do I with php also. If anybody knows something, tutorials, concepts or other helpfull things please fell free to share.