It turns out that the Motorola RAZR V3xx cell phone is not yet supported by iSync 2.3. Fortunately enough, David has created an iSync 2.3 plugin.
David wrote a post named iSync and a Motorola RAZR V3xx and the iSync 2.3 plug-in that can be downloaded from here or from here.
Unfortunately, the version that is available at the moment of this writing is version 4 and, while it does support synching contacts, iCal synching is not yet supported or working. Anyways, thanks for the plug-in, David 🙂