You can activate your Sure Cuts a Lot 3 Pro software by going to the Help menu and clicking "Activate". You'll be prompted to enter your name and the serial number for the software. The serial number can be found on the Sure Cuts a Lot package near the bar code. It is a 25 digit number with dashes in it. Make sure to enter the dashes as they are required. Then click OK. The software will thank you for activating and it will no longer cut the extra lines through your jobs. If you don't own a copy of Sure Cuts A Lot 3 Pro, you can purchase it here at USCutter.com.