Daniel Chapman:
Similar to the file manager screen, except that it puts out a plugin manager screen similar to the one in CB.
It has a processor to handle an uploaded zip file containing an XML file caled manifest.xml and any files related to the plugin's operation
It then creates a directory in the "com_component/njplugins/" directory that corresponds to the name identified in the manifest and copies the files in there
Could be an extension of the Joomla installer. JCE already does this.
Daniel Chapman: