I deleted some last time, but I can't Rember what key I used...
No because Garrynewman has not made l4d contact for gmod but if you type gmod in google you will find Garry's mod.org and click then type l4d and it shows l4d stuff
No, you do not need to be on the game you bought with Gmod to play it although you do need to have the game installed to run gmod and i also recommend having the game Half-Life 2 installed to get most of the textures and weapons and npcs and props that go along with it.
Yes, Here's some from Garrysmod.org, a trusted site. http://www.garrysmod.org/downloads/?tag=left+4+dead Just to let you know, these DO NOT WORK and CAN NOT using the same or similar method. someone realy needs to find a way already, or Garry should upload a gmod patch to make it compatible for l4d.
No. Gmod is only for PC
no. gmod is only for the pc.
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.
Gmod 10 is a pay game. It can be purchased from the Steam store at http://store.steampowered.com It costs $10
you click the shortcut icon er the gmod .exe/file!
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/
NO
Any Source GamePreferably CS:S as most gmod users have this
piggymoo.com has all of stargate, but I'm not sure what gmod is.