Using the familiar IBM Installation program, PMINews can be installed and uninstalled independently from PMMail if you already have it.
Documentation comes in the program's help files.
It looks good and gets you around quickly. Each Grouplist has its own settings, signatures and filters that are kept separate from the rest. However, there still does not seem to be a way of sharing signatures or filters between these group lists, or with PMMail. This could make it a real chore to copy a filter over from one group list to another if you wanted it to be truly global. They say the best way to hide something is to make it as obvious as day, especially if people are used to searching hard to find it.