"New" toolbar button name

Yahoo Archive
1
I'm trying to disable the "New" toolbar button but am not guessing the right name for the button. I've tried "NewTool","AddTool", "CreateTool" and "AddNewTool" so far but none are correct. What is the correct name to go into the code below?

tools.Toolbars("Standard Tools").Tools("NewTool").InstanceProps.Visible = Infragistics.Win.DefaultableBoolean.False

TIA,
Ed