Did you check out the default Screensaver in Vista, If you liked to have it in Windows XP then here’s the Vista Screensaver Ported to XP available.The screensaver works with Windows XP and even Windows 2000.The download has 4 screensavers Aurora,Bubbles,Mystify and Ribbons.

Download and extract the archives.Right click on the .scr file and choose “Install” to install the screensaver.You can configure each screensaver by editing entries in the windows registry.You can follow the “Read Me” file inside the download under each folder to configure the screensavers.

Direct Download Link1, Link2

http://www.addictivetips.com/windows-tips/free-windows-vista-screensaver-for-windows-xp/