No.
Perform an inplace upgrade if you need the domain to be in mixed mode. An
inplace upgrade *can* be where you remove Win 2k (2k3) from the new server
and install NT 4.0 on it as a BDC while connected to your existing domain,
promote to PDC then upgrade to Win 2k or 2k3.
hth
DDS W 2k MVP MCSE