If you need to enter your registration codes and your operating system is Windows 8, you can enter them by first doing a search. From the desktop, just tap WINKEY (or CTRL + ESC) and start typing. The standard Search appears, with a search pane on the right. Or, if you're already at the Start screen, just start typing.
As you type a search,
search results appear on the left.
Then all you need to do is select the program from the list that you wish to register.
A dialog box will appear and simply enter the name and key into the fields.
You must enter the information exactly as it appears on the e-mail you received.
After you have filled in the fields, click OK.
Your program is now registered.