OT re: multi monitors. Thanks, Bruce. You always seem to have the tech answers at your fingertips.
I'm only modestly computer savvy, but I'm running out of a G4 (Titanium) PowerBook, which allows me to run all my normal operations in the office and at home. I add a 21" monitor by simply plugging it into the back of the Book. The graphics hdwe is already there and OSX does the rest.
If I were to add a 3rd monitor (the thought has crossed my mind), I suspect I might start to push the processing speed (500mhz PPC) of this 3 yr old Book, so I would probably buy a new one (I'm about due, anyway, due to physical wear and tear on this one) and run the pair side by side.
Nevertheless, I appreciate your quick and expert suggestions.
Thanks again,
phill