Tried with bridge and photoshop and they will not open DCR file
How can I convert this file to a DNG...do I need to go old school and download a older version of camera RAW or go to an old MAC te a os that supports Kodak's DCS host software
There is a separate DNG converter tool from Adobe, whichnyouncan download as freeware.
No idea though if this does support your special raw format.
This is often used to help people with LR3 but newer cameras, which are supported in LR4.x only.
Going for an older camera raw version will not solve anything, since older formats are always readable by newer versions (provided the file is uncorrupted).