Corel wordperfect office x3 keygen

I installed WordPerfect Office X3 (Serial No. WS13WRXULL) on my new computer which runs on Windows 7. When I go to X3, the screen goes directly. I just got an Office X3 Student and Teacher Edition and when I tried to install There was a note saying that I should contact Corel, but I am not  Activation code for X5 - WordPerfect Universe.