HELP I can't start esf

I unzip esf to halflife D:\half-life/esf and then I go to custom game and ESF is not standing there!!!!!!!
I have tried everything I also have version 1.1.1.0 so what am I doing Wrong PLEASE HELP ME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!;( ;( ;( ;(

when u install u need to browse and put the game under :c:\GAMES\ and so on......(the GAMES is missing)

*c: /games (with out the space)