In theory, everything can be built with software. <br/>However, I get the impression that you want to build some kind of Customer Relation Module (CRM). SitePad positions itself as a package to display static web pages. That means that you have to put and update all your relations hard coded in a table on a web page. That would be more convenient to maintain in a database. A lot is possible, but for me it is still unclear whether and how I can use a database to store information and display it on a web page. It cannot (yet) provide Ecommerce functionality.