[Duke2003]

I am having this same Cd-Key requiered problem , it asks "Please enter your Original CD-Key" and it will not accept any cd key
Has anyone found a solution to this problem???

The situation:
I installed to totally new computer Neverwinter Nights on 3 Cd-s and then I installed NWN:Shadows of Undrentide . In both cases I entered CD-keys

FINALLY I FOUND A SOLUTION !!!!

When game asks "Please enter your Original CD-Key" then you have to enter !!!Shadows of Undrentide cd-key!!!(important) not NWN cd-key and now LAN works !!!!!!!