Hi Tim,
Actually one of the nice things about version 3 is that the fully purchased installation creates a folder called /Installation for you. There are instructions in the Help/QuickStart Guide that detail where the folder is, and telling you to make a copy of the folder to save in case you need to reinstall the software. Unless you had to totally wipe the hard drive, that folder should still be intact.
You can find the QuickStart Guide online at
http://www.notation.com/download/Qui...s-Composer.pdf
If you run into any further troubles, please contact us directly at
support@notation.com
Merry Christmas,
Sherry