How do you change the size of images in Microsoft Word 2007?

I am writing a paper for school, and I have over 2000 images in my paper. I wrote it in Microsoft Word 2007, and I want to be able to change all the sizes of the images at once. I want it to be like changing all the font size, but just the Pictures.
How do you change the size of images in Microsoft Word 2007?
Select each image by holding down the CTRL Key. Then resize 1 image, and each will do the same.



There's no way around selecting all images, not that I'm aware of anyway.