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(C) 2004 Valve Corporation. All rights reserved. Valve, the Valve logo, Half-Life, Counter-Strike, the Counter-Strike logo and Counter-Strike: Condition Zero are trademarks and/or registered trademarks of Valve Corporation. The Turtle Rock logo and "Turtle Rock Studios" are trademarks of Turtle Rock Studios, Inc. Sierra and the Sierra logo are registered trademarks or trademarks of Sierra Entertainment Inc., in the U.S and/or other countries. Vivendi Universal Games and the Vivendi Universal Games logo are trademarks of Vivendi Universal Games Inc. All other trademarks are the property of their respective owners. L.L.C