unzip .pz files

Hi to all, this is a simple question, but I don’t understand the manual.
here’s the question:
How I unzip .pz files?, I know I have to use the punzip command, but I don’t know where, and I don’t know how to do it too, and the FAQ,doesn’t explain it very well.
Thanks for reading.
PD: I think this is the last noob question I ask here, I don’t want to bother xD

This has been asked quite often.
Rightclick the file > open with > locate the punzip binary.
Alternatively, go to a terminal, and type:

punzip path\to\file.foo.pz