As Sai said, Google Maps (not Map Maker) would be a better tool for this. In Maps, click on the "My Places" button on the left hand panel, then click on the red "create map" button. You should see three icons on the upper left of the map window, near the zoom bar, with a hand, a pushpin, and a sqiggly line. Click on the squiggle to start drawing lines. If you need specific addresses, you'll have to zoom in deep on the map to locate the start and end points.
Alternatively, you can go to
http://www.daftlogic.com/projects-advanced-google-maps-distance-calculator.htm, where it lets you input the address directly into its search box to draw a "straight" line (actually a great circle) between two points.