This is a pretty detailed explanation of how to do it: The V710 is listed way down in the list, you have to keep a sharp eye out to see it:
Make sure your phone has the latest firmware (go to the menu, select Phone Info, select Other Information, select S/W Version). Synchronization was added in version 8700_01.40.0R. If you don't have the latest firmware, go to a Verizon store and have them upgrade it.
Change the existing V710 entry in /Applications: iSync.app: Contents: PlugIns: ApplePhoneConduit.syncdevice: Contents: PlugIns: PhoneModelsSync.phoneplugin: Contents: Resources: MetaClasses.plist to use the USB-BT driver. When you're done, the entry should look like this:
<key>com.motorola.V710</key>
<dict>
<key>Identification</key>
<dict>
<key>com.apple.gmi+gmm</key>
<string>Motorola CE, Copyright 2000+Motorola CDMA v710 Phone</string>
</dict>
<key>InheritsFrom</key>
<array>
<string>com.motorola.usb-bt.0x22B8/0x
4902</string>
</array>
<key>Services</key>
<array>
<dict>
<key>ServiceName</key>
<string>com.apple.model</string>
<key>ServiceProperties</key>
<dict>
<key>ModelName</key>
<string>V710</string>
<key>PhoneIcon</key>
<string>MOTV710.tiff</string>
</dict>
</dict>
</array>
</dict>
The
bolded numbers is the only thing you replace.
Make sure to remove the V710 device from iSync if you had previously synchronized with a USB cable.
If you had previously tried to pair the V710 via Bluetooth, delete the device from the list of Bluetooth devices. Set your phone to be discoverable and then use the Bluetooth preferences to add the device again. This time the synchronization option should be checked instead of ghosted.
If the V710 doesn't automatically get added to iSync, go to the "Devices" menu and "Add Device...". Once added Bluetooth synchronization of Contacts and Calendars will work.