The guy is able to use a mouse with handicap settings. He has been building simple objects in Sketchup to learn the tools. Thanks for the input everyone.

I am currently helping to teach a 3D design course at a university. All the projects that the students do are made with their hands. This semester we just happened to have a quadriplegic student enrolled in this class. I am curious to know if anyone knows of handicap students using Sketchup to produce 3-dimensional design. This student has never used Sketchup before but is rapidly accelerating in his capabilities. Our goal is have this student design projects in Sketchup and then either out put them to a CNC router or 3-dimensional printer. We are also planning on building a "David" laser scanner for the student to manipulate existing objects in 3D space. I would like to begin a dialog with someone about the capabilities of Sketchup for handicap persons. Any ideas or thoughts are greatly appreciated.