OK I figured it out.
I emailed the file to myself, which I then downloaded to another computer - using it as a "guinea pig".
I tried to execute the file on my micron P-166 by double clicking on it - nothing happened.
To open the file, I changed the extension from .exe to .txt - and voila - I was able to open it in Notepad.
It contained a lot of gibberish, but within the text file, references to uninstalling Cyberlink's Power2Go program.
And in fact - the creation date and time for this uninstall_cds.exe file, and the Cyberlink Power2Go program - are the same.
So the file is legit.
Surprised google turns up nothing on this file.