Calibur Computer Upgrade

Hi had a question about upgrading the MAC computer with a FACSCalibur. We
have an older model attached to it now and would like to upgrade that to a
new one, the OS is old enough it's pretty tough to find a printer that would
work with it. If you have upgraded did you buy a new computer from BD with
everything installed on it? Has anyone bought a MAC and gotten that to work
using the card that was in their older MAC? 
 
Thanks
Bryan