Hi,
I am using dvbviewer and csc. It works very well. U need MDAPI plugin for dvbviewer and then put csc files inside mdapi plugins not DVDViewer plugins. The only thing is to put CSC.ini in the root folder of dvbviewer (eg: programfiles/dvbviewer) not in the plugins.
Hope this helps, there are few posts on how to MDAPI with dvbviewer