Not true, miss nancy... there is a difference between the diffuse colour channel, which most textyure maps are plugged into, and the 2d image map node, which is what stores the actual map info. Diffuse colour and blender nodes, such as the one suggested by stefan, are animatable. The image source channel of an image map, however, is not - once you load an image into it, you're stuck with it throughout the animation. what stewer suggested was that, if you use a blender node, and plug in two image maps (one into each colour channel), then by animating and changing those colour values, you should be able to blend from one image map to the other in the diffuse colour channel - which is something different entirely from trying to change the texture map used in a single node. Hope this make sense - if/when I have the time, I'll try and take some screenshots to make it simpler to see wht I'm talking about. jonthecelt