How do I make the printing larger on the screen so I can see it better?

Almost all the windows and dialog boxes in Legacy are re-sizable. When you stretch them larger, Legacy automatically re-sizes everything on them, including the text. If the text is smaller than what you can comfortably see, you can change the minimum font size by choosing Fonts tab on the Options / Customize screen. Change the Min. Font Size setting in the Screen Fonts box to a larger number and then press Save.