One of the handiest things in PowerPoint are the guide lines. You can turn them on and off using draw>Grid and Guides and checking the box that says “Display Drawing Guides on Screen.” In PowerPoint 2007, right click on the slide and select Grid and Guides. The guides will appear as dotted lines on your screen, but they don’t print.
If you move your cursor over the guide, then depress the left mouse button, you can move the guide. If you hold down the control key and move a guide, it adds another.
Objects and text boxes will “magnetically snap to the guides, and that makes it really easy to line up all the things in a column. You can use the horizontal guide to line up the tops of all your headers, etc.