If you already own a Sage 50 of the same version as you are installing you will need you Serial Number. After installation is complete you will need to register the program and this can be done online. You will require the company name and account number.

All of this information can be found on your old computer if it is still running. from the Sage 50 home page go to Help, About Sage 50, and Support Info. This window provides all of the information.

If you don't have a serial number you will have to wait until Monday morning to purchase one from Sage Sales.