You will find DocuVieware included in the GdPicture.NET package.
Run gdpicturedotnet.exe installer from your computer and follow the process.
Please have a look at the readme.txt file that appears at the end of the installation: it will help you getting started with DocuVieware.
To uninstall DocuVieware, go to the system control panel. In the "Programs and Features" section select GdPicture.NET and click the "Uninstall" button.