Kodak PCD format, unable to open in Photoshop CS2

I am unable to open Kodak PCD files in Photoshop CS2. The PS help file says that I can, but when I try, I get message that it is not the right kind of document. Someone on another forum said that there are additional formats that can be loaded from the CS2 disk, but I can't find such option.
I had no problem with PhotoShop 7.01.

Check you PS disc, there should be a format plug-in you can install to support this. However, if I were you I would convert my PCD files to TIF and junk PhotoCD. It is a dead format and I wouldn't count on support of any kind much longer.

Robert