Window Vista is filled with many visual additions. Most notable among is the new aero interface. I have found a tip on how to slow down the rate of speed of the animation in the software here is how to do this.
You have, to do some registry edits to make this happen. Create the following registry key;
Then create the value:
AnimationsShiftKey (DWORD) and setting it to 1
The animations can also slow down by pressing the [Shift] key. This is the animation that you see, while minimizing maximizing or closing the window. Please note that this will work only if you have aero interface turned on.
If you want to do this automatically, Steve Wiseman of intelliadmin has created a program that will do this for you. You can get that here