Does a Click2Screen network require permanent Internet connection?
No. Click2Screen only requires internet to update content and schedules. As all content is downloaded and stored on each player, it doesn't require a constant internet connection to play 'live', like a television connection.
How do I deploy a network in areas where only dial-up is available?
This will not be a problem. Click2Screen runs on any internet connection, no matter what speed it runs at. The only restriction might be the size of the media files you can have downloaded to the players.