To print your screen on Windows Vista, start by going to the start menu. Click on all programs then click on accessories. When accessories opens click paint and that will open a new window with the paint program. Minimize the programs so that your desktop is all you see. Press the prtsc button near the top right side of the keyboard. Once you have pushed prtsc, restore the paint program so that it is full screen again. Click edit and a drop down menu will open. Then click the paste button. Your desktop will appear on paint. If you want to save the desktop click save as and enter a name for the file and you are all done.