Congratulations on your purchase of a STEPCRAFT CNC System. Once your machine is assembled (D-Series), you must install UCCNC onto your computer so you can begin the final steps to align your machine, and then you are opening up a whole new world of things you can create with your CNC. We designed a Multi-Installer program that will make installation very simple. This file should be included on the Orange USB drive included with your kit (If purchased from www.stepcraft.us - In the USA). If you do not have this drive or file, please email email@example.com right away and we will send you the link where you can download it.