How to activate Windows 8 RTM

Do you find any way to change product key for your Windows 8 RTM ?

Solution: 
1. Run Command Prompt as administrator
2. key in command as below :
    slmgr /ipk AAAAA-BBBBB-CCCCC-DDDDD-EEEEE ( Product key )
    slgmgr –ato

You will be prompt for the Windows Activation Successfully message.

Congratulation your Windows 8 RTM is activated now.