Thanks stompem, I did the registration and i got a new novaworld account, I did it the same two months ago but now i followed your istructions.
Then I see that I do not have any product keys associated with my new Novaworld account, so I inserted CD keys of my games - Delta Force Black Hawk Down and Delta Force Black Hawk Down Team Sabre.
Novaword didn't accept the CD keys with the message:
This Product Key has already been used to powerup an account (K013)
with both of two CD keys games.
So What can I do now?
Remember that if I did the registration on Novaword 10 years ago (but I think I did no registration and when I played multiplayer 10 years ago I didn't insert any account to play).