Heavy Quark Production at NLO in a 50-min-shell I will present the basics of the Next to Leading Order (NLO) calculations for heavy particle production. Partonic and hadronic cross-sections and kinematics obtained with the HVQMNR code will be presented. The semileptonic decay channels of the BBbar and DDbar heavy mesons will be discussed in conjunction with PYTHIA results for the Z0+jet production at LHC sqrt(S)=5.5TeV.