1.Plug Phone into Computer via USB first 2.Under Notifications Mount as USB Drive 3.Navigate to "HTC Sync Manager Program (setup_1.1.83.0_htc.exe)" and double-click to run 4.After instllation unPlug USB cable 5.Open HTC sync in Computer, plug in your phone and follow the Wizard
Other information may be usful- http://androidforums.com/htc-hero/7188-help-htc-sync.html