since i only have windows vista home premium, it is not possible to have the ultimate feature for having those dreamscenes for wallpapers.
but i found a (time limited) freeware, that does this, and has other cool effects, i totally love it :D
and it works perfectly on my vista laptop, so i thought i share with you here:
Desktop Effects
http://www.desktopfx.net/
Change your boring, static wallpaper in a fully dynamic, living and moving background.
Supports Windows Vista
Supports Windows XP
Works on Multi Monitor systems
Use a video as your background
Fading wallpaper transitions
Slideshow your favorite images as your wallpaper
Have Snowflakes falling behind your icons
Underwater wallpaper
and much more..
--
and this one can make your screensavers run as wallpaper:
http://www.dreamscene.org/download.php#s2d