To add .ocx and certain .dll files, it will be necessary to restart your computer in DOS mode and run WINDOWS/SYSTEM/REGSVR32.EXE from the command line.The following are the commands and switches you will need:
regsvr32 [/u] [/s] [n] [i [:cmdline]] dll name or ocx name
/u (unregistered server)
/s (silent; display no message boxes)
/c (console output)
/i Call dll or ocx install passing it an optional [cmdline]; when used with /u calls dll or ocx uninstall
/n Do not call dll RegisterServer; this option must be used with /i
