To download gmod for free, you must first find a website that offers the software for free. A simple search through the search engines should bring up quite a number of options for you to choose from.
gmod 9, yes gmod 10-no
piggymoo.com has all of stargate, but I'm not sure what gmod is.
Download the playermodel addon from the workshop
You need to download Gmod 9.0.4c when you start there will be 3 choose unmark the Gmod 9.0.4b and your set to go and play gmod 9 online.
I would recommend garrysmod.org
download them from garrysmod.org
download them on garrysmod.org, or port them mingebag
you can use gmod in any way you like its pretty much a free roam game where you can spawn things and download addons the gmod website its an awsome game hope you enjoy! p.s. if you dont have a steam account you cant play gmod and you also need a game source by lolkid007
go to steam.com here are some links related to Gmod to help you: Steam: http://store.steampowered.com/ Download stuff to Gmod here: http://www.garrysmod.org/downloads/ About Gmod: http://www.garrysmod.com/about/ Gmod fourums: http://www.facepunchstudios.com/
go to garrysmod.org (Not all of the girl stuff)
gmod is 10$ at garrysmod.com
It all depends on your internet connection speed. Mine took about an hour to download, while my friend's took four hours. Right before Gmod starts downloading, it will tell you how long it will take.