If you have your information in a web page format you could just get away with connecting DMP's to your network and point the DMP's to that webpage to display. If you are looking for more of a content driven, scheduling and more advanced services you would need the whole DMM/DMS setup.
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.