Here's one that's sure to be asked more and more.....
Q. How do I install HTCSync in Windows 7 64-bit?
A.
Find "C:\Program Files (x86)" in Windows Explorer
Create an
"HTC" folder within this
Download the Vista x64 drivers from
here
Extract the contents of this ZIP to your previously-created HTC folder
You should now have a
"C:\Program Files (x86)\HTC\HTC Driver\Driver Files\Vista_x64" tree containing the Vista x64 driver files.
Now install
HTCSync and reboot the PC when completed
After restarting, connect the Hero and it should be recognised and the drivers correctly installed.
If the device disconnects afterwards, unplug the handset and reconnect. It should now connect properly.
Note:
If you've previously attempted to install, uninstall
HTCSync and reboot before attempting the above. Don't uninstall
HTC Drivers though - simply unzip the driver files into the existing ""C:\Program Files (x86)\HTC\" folder