Adding On

So I got Garry’s Mod, and I downloaded three mods I wanted. I put them all in
Computer/Gateway(C:/Program Files (x86)/Steam/steamapps/lucas09292/Garry’s Mod/Garry’s Mod.

I went into Garry’s Mod, and none of the mods I downloaded worked. Am I doing something wrong?
What place do I need to put the mods?

Put them in addons.

If the folders contain an info.txt place that folder in the addons folder, if it contains folders such as materials, models, scripts and lua, just put it in the Garrysmod directory.

[editline]26th January 2011[/editline]