Reason why ping high.
1st.Because your internet speed,you need to call your ISP and make a request to speed up your modem.
2nd.Your PC problem,check your PC,what is the processor being use,how much your ram
For Counter Strike 1.6 : System requirement
Minimum: 500 mhz processor, 96mb ram, 16mb video card, Windows
2000/XP/ME/SE, Mouse, Keyboard, Internet Connection
Recommended: 800 mhz processor, 128mb ram, 32mb+ video card, Windows
2000/XP/VISTA/7, Mouse, Keyboard, Internet Connection
If your PC below the minimum requirement above,that can effect your ping.
HOPE THIS USEFUL