If you have Sage 50 US installed on your computer, you can move this backup file (.ptb) from your disc to your computer, and restore this backup to a NEW COMPANY. BEFORE YOU RESTORE: Open Sage 50, and CLOSE ANY COMPANY THAT YOU MAY HAVE OPEN. This will prevent you from accidentally overwriting another company. 

For additional instructions on how to restore to a NEW COMPANY , please click this link to an article in our Knowledgebase How to restore a backup

thank you!  will try it later!