A "protoshield" like this doesn't usually have much actual circuitry. It is designed to hold various standard components (connectors to the board below, reset switch, LEDs with current limiting resistors, etc), and allows you to connect them (plus additional components) however you want to achieve relatively simple but "professional looking" custom shields - what you might want to do if your circuit is so simple and so cheap that it really doesn't make any sense to design a PCB, but you want more physical "solidness" than you'd get with free space wiring or a protoboard.
You can look at one of these similar protoshields to get an idea how they are put together and used:
http://www.ladyada.net/make/pshield/
http://www.arduino.cc/playground/Tutorials/Protoshield