How to Register an OCX File in Windows XP 

1. Left Click 'Start'
2. Left Click 'Run'
3. Enter:

	c:\windows\system32\regsvr32.exe c:\[Directory Path]\mscomm32.ocx

where: [Directory Path] points to the directory where you put mscomm32.ocx
4. Left Click 'OK'
5. You should see a message that the file was successfully registered.