A structured wiring system sounds much more complicated than it is. If you have a DVD player, computer or VCR then it is likely that you have a structured wiring system in your home. It is possible to do your own structured wiring system. You just have to take your time and be sure you get the correct quality of cable.
It is recommended that you get at least 2 coaxial cables of the RG-6 quality. You should also try to use twisted cables of the category 5. Lower quality wires can be used but they may result in reduced performance from your appliances and reduced picture quality on your computer or TV.
The structured data system basically means that various forms of data can be carried through the house one set of cables carries the data to the appliance and the other carries it away. An example is a DVD player. With the data being carried to and fro, it could be possible to watch a single DVD from any television in your home. You would simply turn the alternate TV to an unused channel.
Structured wiring systems can be installed in new build homes for a little as 1 dollar per square foot. It can cost up to twice as much however to have the same system put into an existing home. A structured wiring system can transmit data through your home much more efficiently. It is relatively simple to have installed and will not cost a fortune.