When payment is processed you will be redirected where you can download PipeFabPRO.exe. (Excel 2007 or '97-2003    compatible ) to a destination folder ( for convenience copy Icon to Desktop). The application is locked to a single user computer and the installation wizard will generate a unique computer I.D. and prompt you to "copy computer I.D." and "mail to author" (which will generate an automatic return email ). After we have received your I.D. we will email the registration information to unlock your software.Please allow 24 hours for processing and responding with keys.