How to code Listbox - beginner's help

Hi,
I just started taking a VB.Net class and need some help with my first assignment.  I can't figure out the syntax code for how to add text to a Listbox.   My assignment is to add a Listbox to a form and then add specific text to the Listbox.  I need to show my code. 
I tried ListBox1.Item = "text" but this isn't working.  Any help would be much appreciated.

Shahab