Basically, all the images are shot as RAW, I want to use Adobe RGB as the color space [a href=\"index.php?act=findpost&pid=130027\"][{POST_SNAPBACK}][/a]
Off topic to your overall question, which has already been answered (I also use Macs), but curious as to why that color space? Recently, many that shoot RAW are choosing to use a larger working space than AdobeRBG, since it now rarely encompasses the entire space a camera can capture, meaning you are forced to clip/compress colors as part of the RAW conversion.
I prefer to clip/compress the colors to fit the printer space I am working with, since various printers/papers have vastly different gamuts. (Normally handled quite well by just using good printer profiles). Current printers are also capable of producing colors outside of the AdobeRGB space now, and while not exceeding it by much, its seems logical to take advantage of the entire space of the output device before deciding how to compress/clip any colors in an image. Obviously, if you have already clipped/compressed the data when you converted your RAW file, you have lost that capability.
Maybe you've considered this and have a specific reason that requires AdobeRBG, but thought I'd mention it in case you hadn't considered the idea before.
Currently all my RAW conversions are 16bit to ProPhotoRGB.