Now, realizing that this isn't Limewire

, I would like to start over and address my question to the good people at this forum.
After I download and unzip a program, Then What? How do I get it on my computer to make it work, open it or whatever you would call it.
I may be a corporate exectutive, but I'm a computer idiot.
Thank you for any help and the lowdown on LimeWires support, or lack of.