As large-screen monitors become more and more affordable, many people are taking advantage of that extra space by learning how to work in several different windows at the same time. While you can always manually change the size of your program windows, Windows 7, Vista and XP come with a built-in function that will automatically align your windows. You can choose to have the windows cascade from the left, so you can see all the window titles, align vertically or align side by side.
Click on each of the four programs you want to tile to bring them up. Minimized programs are ignored by the automatic tiling system.
Right-click in the taskbar, away from any programs icons, to bring up a pop-up menu.
Choose "Show windows side by side." Your four windows will now appear in a grid pattern, with each window taking up one quadrant of the screen.