Reg Key Aspupload How Do I Revalidate My Reg-key?

How do I revalidate my reg-key? - reg key aspupload

I uninstalled Photoshop CS4 without disabling the serial number. Well, if I install it, says the key is invalid. I knew nothing about it that they turn the key before hand. I have not been able to get the support from Adobe for the time, but it is still a long way to solve this problem without buying another copy to?