Start with a good installation
At the start of packaging Corel Paintshop Pro X4 I searched the internet for recipes. A couple of silent installations are found on the internet. The application kept asking for registration and updates. I found the solution in a deployment guide of the product.
The documentation of suppliers are usually written for attended installation and not for enterprise environments. I was surprised with a decent deployment guide, see http://www.corel.com/support/deployment_guides/corel-paintshop-pro-x4-deployment-guide.pdf