Mutliple Controllers

[eluser]echoDreamz[/eluser]
I am looking to load multiple controllers into CI.

Basically it looks like so...

Main_Site_Controller --> Base_Controller --> CI Controller

Problem is right now I can only do
Base_Controller -> CI Controller

Reason for this is because I have the Base_Controller which extends the CI_Controller, it provides base functionality for all sites that I do, some custom items that I have.

The Main_Site_Controller is really custom to each site that I do, not all, but most have different items that I need loaded without editing my base_controller.

Please help me out on this one cause so far I have not found a solution to this.