How to install a WAD?

Can someone tell me how can I install this two Alien WADS?

http://www.moddb.com/mods/aliens-the-ultimate-doom

http://www.moddb.com/mods/acm-2014/downloads/acm-2014

I rediscovered DOOM using GZDoom linked to my Steam DOOM 2 game, but for that I downloaded an all included working a friend of mine sent to me. So my question is, how can I use GZDoom to play those ALIEN WADS?

Thanks a lot guys!

What do you mean by install? Don't you know you can just drag wad files into GZDoom for wads to work? Or are these something special?

Yeah just drag them onto the .exe and they'll load up. WADS aren't typically installed on anything.

http://zdoom.org/wiki/Installation_and_execution_of_ZDoom will tell you all you need to know.

%portname%.exe -file %wadname%.wad
Optionally add -deh %dehname%.deh if you have a .deh file.