Follow these steps to integrate a .NET WinForms application with Thinfinity VirtualUI:
1. Open Microsoft Visual Studio.
2. Open the application's project you want to integrate with.
3. Right-click on the project name in the 'Solution Explorer' panel and then select 'Add' - 'Existing Item'. Look for the Thinfinity.VirtualUI.cs file, which is typically located in c:\Program Files\Thinfinity\VirtualUI\Dev\dotNet\.