Product License for IBM Lotus Notes

Hi Experts,
Can anyone help me to get a product license for IBM Lotus Notes 8?
I got the below error when I started using Notes and Domino 8 -GOLD recently.
One of my friends told that there is a problem with the registry. Is that so? Do I need to re-install it?
Any advice will be appreciated.

Error: “IBM Lotus Notes does not have a production license. A temporary evaluation license has been enrolled for you to use for 60 days.”
Thank you,
Jennifer
