Can't find UnZIP on my computer Puntuado con 1 de 5 estrellas

where the heck do I find this on my computer???

Puntuado con 3 de 5 estrellas

Installed it and tried to open a zip file. A pop up comes up asking whether I want to reveal it. I say yes, but then nothing happens...
I use firefow 20,0,1 Windows 7 from 2009

Promises, promises... but things are going to be allright Puntuado con 5 de 5 estrellas

If the developer of this add-on makes true his promise to make an even more user friendly 'Unzip' & makes it possible to unzip really large files... Then I promise to develop 'Zip'.
I see a bright future with unlimited Zip and Unzip of countless files, big and small, all within Firefox. Highly recommended.

Esta valoración es de una versión anterior del complemento (0.07.63). 

Merci but what do you mean by 'Then I promise to develop 'Zip''? Are you developer?