You can't use NT CALs on a Win 2k3 domain. You can however use Win 2k3 CALs
on a NT 4.0 domain.

You need to buy more CALs.

hth
DDS

"dkb" <dkb@discussions.microsoft.com> wrote in message
news:7F4089FF-7B47-4D91-828A-68253F07853E@microsoft.com...
> Greetings,
>
> I have an old environment, which started with an NT4 server which was
> upgraded to W2K. We have 105 concurrent CALs from this installation. I
> purchased and am ready to add a new W2K3 server, and make it the PDC, but
> I
> am not sure about the licenses. Should I be able to migrate them over? Or
> will I be required to purchase new CALs?
>
> Thank You,
>
> David K. Bennett
> 818-716-1515 Ext 149