How do you get left 4 dead models on garrys mod

You can get them form Garrysmod.org. http://www.garrysmod.org/downloads/?a=view&id=56957


Or if you own the actual game or demo (You can't get the demo any more), you can use CGFScape (http://nemesis.thewavelength.net/index.php?p=26) to extract the models materials and particle folders in the pak01_dir.vpk in the \Steam\steamapps\common\left 4 dead\left4dead folder to the Garrysmod/addons folder and add an info.txt with the folowing information:


"AddonInfo"
{
"name" "L4D Content"
"version" "1 *****"
"up_date" "July 25 2009"
"author_name"YourName "*****"
"author_url" "http://www.valve.com"

"author_email" "[email protected]"

"info" "The Content From Left 4 Dead"

"GCFRequires"
{
//"0" "220"
}
}


Consult this thread for further help and/or instructions....
http://www.facepunch.com/showthread.php?t=642683