Step 1. Install the demo version of Puppetshop by downloading it from our website. Step 2. Create a PuppetNode in 3dsmax via the Command Panel: 'Objects / Puppetshop' option. Step 3. With the PuppetNode selected, In the Modify Panel, press: 'Register'. Step 4. Copy the 'Serial' number from Puppetshop into this website. (Serial Example: 00-34-F4-B2-AB-86) Step 5. Enter your paypal email address into this website.             The Email address MUST be the EXACT address you used in paypal when buying a license (CASE SENSITIVE!). Step 6. Press 'Get Key' and the registration key will be emailed to you. Once received, enter it into Puppetshop.             (Please check your SPAM folder for the key also) E-mail Serial (Please, do NOT enter your old key, read above)