Follow th steps mentioned below ,
On the source machine ,
=>Go to C:\Windows\System32\Sysprep folder
=>Run Sysprep.exe and choose OOBE , check generalize and choose shutdown
=>When the machine is down ,boot it with Ghost boot CD or USB
=>Capture the image ,which is gonna be a Sysprepped image
Restore the same to other clients and sysprep is gonna run when machine boots to OS for the first time