The CD key works only for the game it was isssued with, so you can't use a CD key for BHD to play JO.
If you have a current Nova account with legit copies of BHD and JO registered (which I am sure you do), send a PM to Wupass and explain your problem and see if he can help you with the JO CD key. You may have to wait a little while for a reply...
Meanwhile, if you know anyone with a JO CD and Key, get them to install the game on your PC. At this stage the CD key is needed ony to install the game.
Once it is installed, log into the game with YOUR OWN account name and password and do any updates etc - you should be good to go.