Visual Basic Binding Navigator Add New Row and Delete Row Question

When you add some data components onto a form it gives you some predefined buttons on the binding navigator toolbar.  For the save button there is some code, however the add new row, delete row etc dont seem to have code attached.  For my project I need to replicate the functions of these buttons onto a button i create which i will call "book room".  How can i do this?  I am using vb express 2008.  Thanks alot.