Windows XP is a desupported product by Microsoft. The DK setup routine, indeed, requires a more recent version of Windows. We strongly suggest using VB6 on a more recent version of Windows.
DK ActiveX created applications, never-the-less, can run on Windows XP. Just keep in mind Windows XP limitations, such as accessing https:// (SSL) webservices.
You can follow www.youtube.com/watch?v=G_HhwD0ZptM to learn how to install VB6 on Windows 11. If that is not an option, drop an email to support@ for assistance.