well, I am fully aware of the timers you can buy at the hardware store but they are all single zone timers, currently I already have 1 timed power bar, has 4 outlets that are on the timer the other 4 outlets are not, then I have a second one that has a 2 on and 2 off timer where the outlets switch on and off. Using a computer would be the simplest using the serial port to trigger some some interface, but unfortunately not acceptable. cobra1 and carbonzit are both on the right track.
The only issue with using multiple timers is keeping them in sync with each other and of course the full size of each one. It should most definitely be an all in one unit.