This is a "Corel Catalog" file format that may be native to Corel only.
Shoot me the .clc file and I will see what I can do. I have the newer CiberCut 6.0 and might be able to assist.
Feel free to give me a call as we are the national distributor for the CiberCut and CiberPrint products.
PM me for ftp information if the file is too large to email.