There are a number of audio/video "splitters" available.
Generally they will take the input from your dvd or other source, and send it out to many TV's.
An example from Kramer electronics
This unit does composite video with audio. There are all sorts of configurations available.
Depending on picture quality you expect to get, and if you want a cheaper solution, you could always just modulate the dvd signal to a TV channel and run regular coax cable from a cable splitter.
I'm a new small business owner and plan to install several LCD tv's throughout my store. Can someone tell me what I will need to split a signal coming from a single DVD player to the TV's located throughout the store? Will I need a special DVD player?...or just a signal splitter?