Hi Barry,
To remove the compact flash card, it's a matter of getting a grip on the
part of the compact flash card that sticks out from the side of the unit and
pulling it out. Make sure the BC is switched off first. If you wear your
headphones, you'll hear the BC say, memory card removed. Then, just push
your new CF card into the slot, making sure it goes the same way as the one
you pulled out. You don't have to move any files over; it's ready to use
when the BC says, ready, and beeps to say it's switched off again.
Hope this helps.
Cheers,
Sandra.