www.counterstrikesource.com/forums/counter-strike3032.html

* How to get the console up (Steam) *

^1 Open up the "MyGames" tab.
^2 Now Rightclick (Mouse2) on the game.
^3 Hit "Properties" a window should pop up
^4 Now hit the button "Set launch options..."
^5 Another window should pop up.
^6 In the textbox type "-Console"
^7 Hit "ok" and start css
^8 A window called "Console" should start up with the game.
( Like beside the "create game" and that stuff)

Hope i helped u guy´s/girl´s out -Malthe

[Edited by Galifex, 1/18/2012 8:43:30 AM]