getting images
1. buy or download ready-made
images
2. digitize photographs/drawings with a scanner.
3. shoot pictures with a digital camera and load onto computer
4. Draw images in a graphics program (Photoshop, Illustrator, Flash)
stock photography on CD
ex.
http://www.photographers.com
Kodak and others will develop
a roll of film on CD for you.
if you create your own images, save them as 72 dpi (most for screen resolution) at the size you want as GIF, JPEG, or PNG. Don't save as BMP (only IE on Windows will see them).