Disable Synchronizing the Time in Windows 7

Here is how to disable synchronizing the Time in Windows 7:
1.Click on the taskbar clock --> Change date and time settings --> The "Date and Time"dialog box appears --> the "Internet Time" tab --> "Change settings" button.
2.The "Internet Time Settings" dialog box appears--> Uncheck "Synchronize with an Internet time server" --> Click "OK" button to apply.