We search for high-mass resonances decaying into Z boson pairs
using data corresponding to 6??????fb-1 collected by the CDF experiment
in pp?? collisions at ???sÿ96??????TeV. The search is performed in
three distinct final states: ZZ??????+???-???+???-, ZZ??????+???-????,
and ZZ??????+???-jj. For a Randall-Sundrum graviton G*, the 95% CL
upper limits on the production cross section times branching ratio to
ZZ, ??(pp?? ???G*???ZZ), vary between 0.26 pb and 0.045 pb in the mass
range 300<MG*<1000??????GeV/c2.