Many of the executables and DLLs are COM-components and must be registered.
These EXE-files must be registered by starting them with the /REGSERVER command-line parameter and DLLs (and OCXs) with the regsvr32 utility.
This is automatically done by the install program. The exact details of which files and where is they are installed can be found by studying the source of the install script that is found in appendix A. This is compiled with Nullsoft’s Open Source tool NSIS.