The demo trial is a fully working copy of ChemOffice Ultra with no limitations. The trial starts from the date you install the software, and expires 14 days later. To be able to install this trial version you will first need to request a serial number from the developers. Go to http://www.chemstore.com/cou-cd.cfm to register with ChemClub and then you will be e-mailed your serial number and registration code to unlock ChemOffice Ultra. To install the software simply insert the CD into your CD-ROM drive & after a few moments a splashscreen should appear. Click on the option to install the ChemOffice Ultra Trial & follow the online instructions. Once the 14 days are up, that serial number and reg code will never work again, even if you install the software onto another PC.