Ok folks, finally got it up and running. Please find on my web site in the tools section, a .MAP to CSM file convertor. This application will parse any .MAP file, including WADs and create a CSM file with exported textures as BMP files in a subdirectory named after the .MAP file you're converting. Once the .MAP file is converted, copy the subdirectory to your CShop/Textures directory before loading the .CSM file.
Please note that this current release of the application does not modify the .MAP light entity parameters in anyway, so you will need to do this in CShop before rendering the lightmaps. I've tested this with small .MAP files and WADs but not on very complex maps so please bare with me if you have problems. If you do, email me the .MAP, LOG output, and any required user based WAD files. If you're using Half-Life WADs, I've already got them.
Anyway, enjoy and I hope it proves useful.
APEX!!