I am not familiar with CS4. I do have Photoshop v3 and Photoshop Elements v2. They both have calibration help to do color management so that the monitor and printer output will be close.
The image attachment shows Photoshop v3 Calibration content page. I would imagine it carries over to CS4.
The image attachment shows Photoshop v3 Calibration content page. I would imagine it carries over to CS4.