Is this reader USB? USB readers should show up the same as any other USB storage device, something like /dev/sda1. If it is an IDE-based CF adapter, than that would just show up as a normal IDE drive and should work under essentially every operating system; it would appear as /dev/hdb or similar.
Although I have to say, Red Hat 6.2 is absolutely ancient software. I believe that is still running the 2.2 kernel, which I am not even sure supports USB (I know the kernel didn't get full support until 2.4). I would be surprised if you could get much of anything modern working.