We're going to look at the code to the Manual Data Entry data source to demonstrate how to write a data source plugin for User Creation Wizard.   For this, you'll need: A copy of Microsoft Visual Studio 2010 (Express will do) Some familiarity with C# User Creation Wizard Start a new . NET 4 (not Client Profile) Class Library in Visual Studio, then bring up the Add References window for your project and choose Trogsoft. DsTools. Ucw. dll from the path C:\Program Files (x86)\Trogsoft Ltd\ADStudio\User Creation Wizard (or wherever you installed User Creation Wizard).