http://users.skynet.be/hofinger/MapCapt.html

This utility automatically scrolls, captures, assembles and saves maps (or other window content) from a Web page to a bitmap file, even if scrolling is controlled by custom controls. It can be used for example with http://maps.google.com, http://maps.yahoo.com, http://www.viamichelin.com, http://www.randmcnally.com, http://www.geoportail.fr, http://maps.live.com.