Error when registering registry file

Hi All

I'm trying to follow some instructions to install a component. The instruction specifically aske me to cop the registry file from the LAN resource drive to my local temp drive and double click on it. So, using Windows Explorer I copied and pasted it to my C:\windows\temp drive, once I tried to double click on the registry file, an error message appears as 'Registry Editor: cannot import C:\WINDOWS\TEMP\COMN.REG, the specified file is not a registry script. You can import only registry files'. What have I done wrong? Can someone please help. How can I import this file from my LAN resource drive to my local temp drive?

Thanks in advance!

Beth