Custom control creation problem

Hello.
I want to create custom control something like side menu. This control must only be a parent of components of appropriate type. It is desirable that object of controls collection are of strict type. Or better hide Controls member of my control and substitute it with Items member which is a collection of a strict type.
How should I create this type of component?

[387 byte] By [OleTsu] at [2007-12-16]