Grumpy_Mike:
The base emitter junction of a transistor is just like a diode, it will conduct current. This will flow from the base through the emitter and out of the emitter and through the LED.
If you labeled the transistors in that diagram perhaps we could talk specifics.
The three LEDs shown as on, are on because 5V is being applied through a resistor through the base / emitter junction to all three LEDs. Why should they not be on?This is a good place to read up how transistors work.
Transistor Circuits
Ohh I understand now, so the current still flows through the base on NPN transistors, thats why they are turning on, so now all I need to do now is work out how much power the transistor needs to work but not enough to flow and power the LED's. I guess if I can I will use these: http://jaycar.com.au/productView.asp?ID=ZT2154&form=CAT2&SUBCATID=973#1 and use a 2.4k resistor between the base and the Arduino Pin so it doesnt have enough power to turn on the LED's without the collecter also being on
I thank you sooo Much for your hlp Grumpy Mike you truly are very helpful, Thankyou 