If you go into design view, right click on the listview and select "Edit Columns" you will see the names of all the columns (you can change these names). You can use these names to modify the header text at runtime as in
ColumnHeader1.Text = "new header text"
If you need to add column headers at runtime, I've found the best way to find out how this is done is to create the headers at design time, then look at the contents of Form1.Designer.vb in your project folder (replace Form1 with your actual form name if different). This file contains the code to create the controls. You can use the same code at runtime.