1. installation Path of the TARGETDIR under: HKEY_CLASSES_ROOT->Memomedia->Multimedia Widget
value: ProgramFilesPath
data: TARGETDIR
2. "register [login to view URL]" file for registering plugin in WMP (in WinXP)
3. same as section 2. but for Win 7, unfortunally we don't know yet how to register plugin in WMP under Win 7
4. Before install, you should judge where and how many player exist in destination machine.