Display notification baloon at top

When trying to display notification ballon you must have observed that they are displayed at the bottom of the screen.Whereas applications like volume control,clock display it at the top of the screen.This is much more intutive and user freindly, especially in the scenario when you are displaying it in response to user clicking at your icon. You can also do the same :

In the SHNOTIFICATIONDATA structure give the following value to the clsid member:

{ 0×99de7411, 0×772f, 0×43d0, { 0×81, 0xf0, 0×66, 0×83, 0×36, 0xca,
0×65, 0×1b } }