Where is the plug whole to attach a Dell 1545 to a seperat screen?

I have a dell 1545 and i am trying to connect it with a computer screen (desktop) that runs with a mini mac, i cannot find the plug whole to plug the cord to connect them. Can anyone help please?Where is the plug whole to attach a Dell 1545 to a seperat screen?It depends on what port/connector you are trying to attach it to. If the port is a VGA port, you will have to look for a trapezium type shape which has 15 little holes in it and 2 big holes either side of the trapezium. It's normally on the back/side of the computer (if it's a laptop) and if the computer is a desktop it will be on the back.Where is the plug whole to attach a Dell 1545 to a seperat screen?you will see it here



http://laptop1.eu/product_images/o/025/Dell_1545_Pink__28459_zoom.jpg