You no longer need to manually activate your card. The library ID number should work to login to the library databases when you receive it.
If you are having difficulty logging in from off campus, you can call the UCF Orlando Library Circulation Desk at (407) 823-2580, email the library at circ@mail.ucf.edu, or call the Ask a Librarian service at 407-823-2562 for assistance.
For more detailed information about off campus access: http://library.ucf.edu/my-account/