According to this page http://helpx.adobe.com/photoshop/kb/import-export-file-formats-photoshop.html -- CS4 can read Kodak Photo CD files. However, I get the message "Could not complete your request because it is not the right kind of document."
I checked the Goodies folder on the Content disc for a plugin, as well as the Adobe website, but I couldn't find a plugin. I have thousands of Phot CD images. How can I make this work?
I think maybe that document is wrong, as the last photoshop version i remember having the kodak photo cd plugin on the disc or optional download was photoshop cs3.
Anyway, what version of windows are you using?
If you go here and download the Extra Content for photoshop cs3 windows, the Photo CD.8bi plugin from there should work in the
32 bit version of photoshop cs4.
Make sure you follow the Note:Very Important Instructions or the download links won't work.