cant instal it help

[FlameHaze_Shana]

ok i downloaded the game but if i can instal it until i have to set it to a different folder, i cant press ok and press install, why?

an screenshot, http://i33.photobucket.com/albums/d70/-lily-kou/ESF.jpg

 

[Skyrider]

Because you are not using Steam, WON is not supported anymore. ~This Thread~ will help you further installing Steam, and installing Earth Special Forces as well. Remember, if you already do have steam. Run Half-Life once, and when you are in the menu of the game. Simple quit the game and then install Earth Special Forces.

Just a reminder that you need a valid un-used CD-Key / Serial to be able to activate your steam account to be able to download games that are supported with the key you've entered. Which depends on what game you have bought ^_^