Insert the CD. Follow the on-screen instructions. If AutoPlay is not enabled, press the Windows key + R, then type D:\Setup.exe. (If your CD-ROM drive is not D, use the appropriate letter.)
To start:
Vista: Right-click the desktop background and select ΓÇ£personalizeΓÇ¥. Click ΓÇ£Screen SaverΓÇ¥, then select the screen saver from the drop down menu.
XP: Right-click the desktop background and select ΓÇ£PropertiesΓÇ¥. Click the ΓÇ£Screen SaverΓÇ¥ tab and then select the screen saver from the drop down menu.