You need to register the component with the Windows program -REGSVR32.EXE.
Use the following command:

C:\WINDOWS\SYSTEM\REGSVR32.EXE C:\WINDOWS\SYSTEM\MSCOMM32.OCX

If you want to unregister the component, use the following command:

C:\WINDOWS\SYSTEM\REGSVR32.EXE /u C:\WINDOWS\SYSTEM\MSCOMM32.OCX