If your notation program does not export PICT files, you can make a screen shot like your friend points out. However, you don't want to put the whole notation screen in your presentation because there will be too much there. One way to handle this is to open the complete screen shot file in your favorite graphics program and edit it. This works, but it requires another step. Another idea is to use a screen capture program that can easily grab just the right part of your notation screen without having to open another graphics application.
Similar programs exist for windows systems.
Flash-It is a control panel and is activated by just touching a designated key. Now you can highlight the section that you want and save it to your clipboard. Now you can just use the paste command in Powerpoint. Try to capture the excerpt at about the size you want to use in Powerpoint. You can resize, but it's a little tricky.