Content creation for Multiple Digital Displays

I am trying to research some options for Digital Displays in the we supply hardware and have canned software from equipment suppliers but it is limited and not very user friendly. I am looking to be able to supply a solid content program allowing digital display customers to add: * their web pages <!-- --> * flash files (as needed) * segmented page content to add various content such as ads etc. I apologize for this being vague, but I am trying to find a starting point to determine if I should create a custom interface to allow our digital display customers to use a solid and quality content interface.