Computer and DLP projector carts?

[BZeto]

We have been using very simple ones like this.

Eventually the wires are twisted everywhere and it becomes a mess. We use the setups for classrooms so that instructors can show Powerpoint presentations and demonstraight using MS Office, etc.

Does anyone know of a cart that is better suited for a computer and DLP projector? Preferably something with some sort of cable managment built-in.
Any info would be appreciated.

Thanks