What program do I need to view and edit DLL file?
You can find the link to the DLL cut samples on the download page External cut modules, section Greate your own DLL
There are two DLL cut samples with source codes available for download: Pear and Parallelepiped. Though it is noticed in the source code please pay attention that your new cut will be identified by CLSID, defined in the source code. When you start your new cut using our example, be sure to change CLSID to a new fresh generated CLSID value.
More detailes of working with DLL external cut modules