4 Shaftless Vibration Motor needs to be controlled by 1 Arduino

I have 4 Shaftless Vibration Motor that needs to be controlled by 1 Arduino. Each motor will be in different pins. And each one must vibrate with different intensities. Sir/Mam/Co-Arduino Enthusiasts, please help me out in the Schematic Diagram in this set-up. I'm having trouble in figuring out the proper values and number of resistors, transistors, capacitor and diode. Thanks!

EMAIL: dkam31@yahoo.com

Google search for Arduino Transistor Motor should turn up a few tutorials. Each one will tell you to put a reverse diode across the motor, and an NPN transistor between the motor and Ground, and a resistor between the Arduino pin and transistor.

If you use PWM pins you can control the intensity with analogWrite().