collaborative board

[aneuryzma]

hello,

I need a CMS to implement a system to allow people to cooperate together online on several project.

This is a sketch: hello,

I want to implement a system to allow people to cooperate together online on several project.

This is a sketch: http://dl-client.getdropbox.com/u/72686/seekScience.png

Is there any CMS in actionscript with all these functionalities where I can start from ?

I've used Joomla until now to build some websites and I was wondering if I can use it and its plugins for this advanced service...

Or do you know if I can use some other platform ?

thanks