How to upgrade window 7 profession to window 7 ultimate?

I know every one want to upgrade to window 7 ultimate from window professional and still keep the license .So i would like to tell you some thing about this.
Here is how we do:
1.Right Click My computer --> Properties.
2.You will see picture above --->Click on Change Product key and fill up with new key  to upgrade and waiting.

Or you can do like below

start->search ->window anytime upgrade.

These are not Product Keys they are antime upgrade keys( no product keys are needed!)

Upgrade key for Windows Anytime Upgrade: windows 7 home premium
RHPQ2-RMFJH-74XYM-BH4JX-XM76F

Windows Anytime Upgrade Key windows 7 ultimate
22TKD-F8XX6-YG69F-9M66D-PMJBM

Windows 7 Anytime Upgrade key: windows 7 professional
VTDC3-WM7HP-XMPMX-K4YQ2-WYGJ8


good luck.