As Brian said, most printers work in CMYK. We do alot of print (using LightWave) and work entirely in RGB. When we send our images to a printer we also send a color (match) print along with it so that when they color correct (from RGB to CMYK) they have accurate color samples to work with and can get the colors almost exact - of course that depends opn the printer! Some printers won't charge you for color correction, others will. Best of Luck!