You can choose one of two installation options : windows installer, manual installation.
Windows installer is recommanded as it will add components to visual studio toolbox automatically and install DNJ project template for you.
Click here to download the windows installer. all you have to do is to run the setup wizard and follow instructions.
If you encounter troubles with windows installer, you can download and install DNJ parts manually click here.
the most important part is DNJ runtime dlls, download them from this list then put them in a directory.
to add DNJ webcontrols to visual studio, rightclick the toolbox then click "Add Items" > browse > select the three DLLs > clique OK.
It's strongly recommanded to download the DNJ project template for visual studio, since it's provided with all jquery thems ready to be used with DNJ theme switcher .