  A search for new particles (X) that decay to electron or muon pairs has been
performed using approximately 200 pb**(-1) of pbarp collision data at
sqrt(s)=1.96 TeV collected by the CDF II experiment at the Fermilab Tevatron.
Limits on sigma(ppbar -> X)*BR(X -> ll) are presented as a function of dilepton
invariant mass m(ll) > 150 GeV/c**2, for different spin hypotheses (0, 1, or
2). The limits are approximately 25 fb for m(ll) > 600 GeV/c**2. Lower mass
bounds for X from representative models beyond the Standard Model including
heavy neutral gauge bosons are presented.
