CS and Quake III in 60Hz

How can i change the frequency for the gamess ???
In windows my refresh rate is 75 Hz for a LCD TFT screen and i’av 60 Hz in the game !!!
I want to play in 75 Hz !

Help me !

Your screen probably has different refresh rates depending on the resolution. If the game changes the resolution will also the refresh rate change. You can test to play the game in a different resolution.