How can I change my cd key in windows?

Ok I have a little challenge here. I have a copy of windows xp pro on my computer, but it's not legit. I want to go legit and I have a legit copy. Is there a way to change my CD key so it's legit, or do I have to do a fresh install? Hope you guys can help.

How can I change my cd key in windows?internet explorer update

There are a lot of tools available in the web to do so... But I prefer whats told by Microsoft.

1. Click Start, and then click Run.

2. In the Open box, type Regedit, and then click OK.

3. In the left pane, locate and then click the following registry key:

HKEY_LOCAL_MACHINE\Software\Microsoft\

WindowsNT\Current Version\WPAEvents

4. In the right pane, right-click OOBETimer, and then click Modify.

5. Change at least one digit of this value to deactivate Windows.

6. Click Start, and then click Run.

7. In the Open box, type the following command, and then click OK.

%systemroot%\system32\oobe\msoobe.exe /a

8. Click Yes, I want to telephone a customer service representative to activate Windows, and then click Next.

9. Click Change Product key.

10. Type the new product key in the New key boxes, and then click Update. If you are returned to the previous window, click Remind me later, and then restart the computer.

11. Repeat steps 6 and 7 to verify that Windows is activated. You receive the following message:

Windows is already activated. Click OK to exit.

12. Click OK.

Hope this helped you...

How can I change my cd key in windows?web browser internet explorer

This worked for me http://articles.techrepublic.com.com/510...