in reply to DDE calls using Win32::OLE?

The fact that OLE superceeded DDE doesn't mean that you can control an application that provides a DDE interface using Win32::OLE. If the app only allows you to control it via DDE, you have to use DDE. You should be able to install Win32::DDE from

c:\> ppm ppm> rep add bribes ppm> search Win32::DDE ppm> install 1