Urgent! :( How do i remove windows 7 activation???

[Ranhiru]

I activated Windows 7 but now i need to remove that activation and apply my own genuine key...

How do i do that??

How do remove the current activation??

I cannot format again

Please help me

 

[tcpik]

http://windows.microsoft.com/en-us/windows7/Activate-Windows-on-this-computer