  The new methodology of adding QCD NLO corrections in the initial state Monte
Carlo parton shower (hard process part) is presented using process of the heavy
boson production at the LHC as an example. Despite the simplified model of the
process, presented numerical results prove that the basic concept of the new
methodology works correctly in the numerical environment of the Monte Carlo
parton shower event generator. The presented method is an alternative to the
well established methods, MC@NLO and POWHEG. Refinements of the new method with
better computer CPU time efficiency are also discussed.
