Features :
-It works.
-You can only run 1 instance at a time.
-The bubbles change colours, speed, and direction every time it starts so its always a little different.
-Ends when the mouse moves.
-It adapts to any res (from what I have tested)
--Since it adapts its not all blury like some of them are.
-Its pretty
Screen Shot:

Downloads:
Host-A http://www.box.net/shared/nr58n4cxsm
WHFF http://willhostforfood.com/?Action=download&fileid=75028
Box http://host-a.net/LoopStan/Vista%20Bubbles%20ScreenSaver.scr
Feel free to give suggestions on things to change, I'm all up for it! Hope you have fun