Quarkonium physics in CMS

The CMS experiment is collecting and processing LHC collision data. In the first few months of LHC operation, considerable emphasis is being placed on quarkonium measurements, profiting from affordable dimuon trigger rates, even with relatively loose trigger paths. The performance capability of CMS for understanding quarkonium physics in the dimuon decay channel will be illustrated with Monte Carlo studies and, hopefully, with some preliminary measurements of dimuon mass distributions in the J/psi and Upsilon mass windows, from pp interactions at 7 TeV.