This nodeserver looks so promising if only I knew how to use it.  

A good place to start would be to explain how to fill in the fields on the add dialog. e.g. What is an address? Is there a format? 
What is a device controller? How would I use it?

There must be documentation.
 

@scrutch if you click the "more info" button on the node server page in the store it takes you to the Readme file for the node server. Sometimes that gives you additional setup/use information.

https://github.com/UniversalDevicesInc-PG3/Virtual/blob/master/README.md

Otherwise, others that use this node server would need to chime in to give assistance. Is there something specific you're trying to do? Maybe that would help others help you. I don't use this node server so cannot help beyond pointing to the "more info" button for assistance and further information/documentation.