PayPal offers HTML code that you can paste into any Web page so that your small business can start accepting online payments. By default, PayPal's code produces a left-aligned button on your page ...

The Lines of Code That Changed Everything Apollo 11, the JPEG, the first pop-up ad, and 33 other bits of software that have transformed our world.

When the button must appear in a dialog box, create it using Excel's Visual Basic for Applications window. Once you have made the button, you can then code the VBA event that you want it to run.