He was inundated with the particulars of orchestrating the TV productions of such pop stars as Billy Joel, John Lennon, Hall & Oates, John Cougar, Kenny Rogers and several others.But a seed of experimental curiosity had been planted, and Dubin???s interest in 3D graphics spawned.???Well, I???ve been doing [computer art] since 1989,??? says Dubin, now a freelance TV director and computer graphics s