No, the software won't work with your device. For the GZ-MG630, the correct software is Pixela MediaBrowser. However, the problem with these applications is that they're bundled with the CD that came with your device. The manufacturers only offer updates without the possibility of downloading the full software.
Contact Support: http://secure.jvc.com/consumer/forms/contactsupport.jsp
Note: The support is assured only or US residents.