  The NNLO rates of the intermediate vector boson production (IVB) are
calculated and found to agree with the preliminary results of Run II at the
Fermilab pbar p collider. The estimated uncertainties in NNLO predictions for
the IVB rates including the errors in PDFs, $\alpha_s$, and the
factorization/renormalization scales are about 2% for the Fermilab collider and
3% for the LHC that allows to use these predictions as a competitive benchmark
for calibration of the collision luminosity.
