Hello and thanks for trying the Cadenza for Windows Demo Disk. You must run the Install program from within Windows. To do so, select the RUN command from the Program Manager's File menu. Put the Demo Disk 1 into your disk drive, type in "A:install" and press the Enter key. Follow the install instructions and the Demo will install properly. Be sure to look at the Readme.txt file and the Demo.DOC file for intructions on using the demo. We sincerely hope you enjoy using the Demo.