I have a program in the registry that cannot be deleted. I did a Google Search and found "Error removing registry key" authored by Support.microsoft.com that advised a file from Sysinternals called RegDelNull.zip be downloaded and installed which I unzipped to my desktop.
It's a command-line utility and I don't know how to use a command line prompt.
Please advise me about how to run this particular command. I know how to reach .cmd but from there it's all Greek to me.