Counter Strike or Counter Strike Source?? And Half Life 2 Deathmatch Extention Problems

In garrys mods extensions theres the option to add Counter Strike, is this meaning the normal ‘Counter Strike’ or ‘Counter Strike: Source’ Also i just got both Half Life 2 Lost Coast and Deathmatch, but it wont allow me to tick Half Life Deathmatch, and is staying on Unavailable

It’s referring to Counter Strike: Source.

[editline]8th August 2011[/editline]

Also, make sure that you you’re not confusing Half-Life 2: Deathmatch with Half-Life Deathmatch.

Alright thanks