You can transfer DVDFab from old computer to new one without any problem.
For upgrade, if your license is bought before May 8, 2008, you will get lifetime free upgrade.
To get new version, please download it from http://www.dvdfab.com/download.htm and follow the instructions.
Thanks Fengtao but every time I download up to 5065 I get open DVD source when running original disc to copy and then program closes. I have tried clean uninstall and redownload with no success. Version 5050 works fine. Any suggestions?