Oh thank you so much for your reply.
Here is what I have done. I have just 'backed up' video files, some are .prv some are .mod .prel files. I have just bulk copied them from the (dying) windows laptop, and wanted to use them to make a new (from old files) movie in Premiere Elements 12, as we never had a lot of success in Prem Elements 2 with the burning.
I have flashtime, and quicktime on my apple desktop computer and no updates are necessary at this time it says.
THANK YOU SO VERY MUCH for your help!!!