Sorry, I'm not a mac person run windows for 20 yrs. You should be able to copy the files from the CF to the hard drive, make a folder on the mac for your photos and then copy them over. Unless you don't have permissions set to copy them over, but I suspect that not to be a problem, thinking your own computer.

It should be quite easy to just copy them over, and the card reader should just be showing as a hard drive anyway.