1. Press the 'Windows' key and the 'R' key at the same time to open a 'Run' dialog box. Type 'cmd' (no quotation marks) into the dialog box and click 'OK.'
2. Change directories to the location that you copied the Mswinsck.ocx file to, using the 'cd' command. If you copied the file into the standard Windows 7 system directory, for instance, you would input 'cd C:\Windows\System32' and press 'Enter.'

3. Type the command 'Regsvr32 Mswinsck.ocx' and press 'Enter.' Include a '/s' before the name of the OCX to run the command in silent mode and suppress messages; otherwise wait for the Windows system to confirm that it has registered the file.
4. Click on the 'Windows Orb' button to open the 'Start' menu, then click the arrow next to the 'Shut Down' button. Select 'Restart' and reboot the system to ensure that changes take effect.