this has come up quite often since many websites have a huge database, like my forums. for example, this would be good for files that cant be imported via phpmyadmin, or other php powered mysql fonrtends.

This tutorial will teach you how to create huge print resolution images of Google maps ready to print off, You may also want to download Rasterbator in order to cut your image up into A4 printable pages.

Learn how to use image size to blow up your image.