How to register a DLL file in Windows 7?

To register a comm .dll or .ocx on Windows 7 32-bit, do the following:

1. Copy .dll or .ocx to c:\windows\system32
2. Type cmd in Run menu, it will search cmd.exe, right click and click Run as Administrator
3. It will show a prompt at c:\windows\system32
4. Type regsvr32 ocxname.ocx to register .ocx
   or
   type regsvr32 dllname.dll to register .dll