http://stackoverflow.com/questions/12933279/how-to-comment-and-uncomment-blocks-of-code-in-the-office-vba-editor
One way to quickly comment and uncomment blocks of code is to add the Comment Block and Uncomment Block buttons to your toolbar.
Go to: View -> Toolbars -> Customize
Next, go to the Commands tab and then the Edit category:
Select the Comment Block and drag to the toolbar:
Do the same for the Uncomment Block.
