Stcking a 3750 switch 3

[glamprecht1]

I currently have one cisco 12 port 3750 that acts as the core switch for my entire network. I am not only out of ports but need to add redundancy to the core swtich. I would like to stack a second 3750 to the first. Then use the original 3750 switch's ip to manage both.
From what i am reading It sounds like i just connect them together with the backbone cable. From there the second switch is automatically configured. Is this true? The last thing that i want to do is to take down the entire network.
Is there more involved? It just sounds to easy.

 

[glamprecht1]

Thanks Viper Egg