Terminal Services License issues

Hi everyone, hope you can help with my problem.

We have just added a Windows 2003 server to our network,
we also have a SBS 2000 server (SP3). The issue is not
related to the domain controller as you might expect, our
problem is that we have Terminal Services running on the
new 2003 server but we cannot add licences to it. The
system accepts all the information ie: Add licence, but it
does not actually add licences to the Terminal Service....

Any ideas what could be causing this?

Many thanks for any suggestions.

Daniel