Links for Buttons, Bars and Backgrounds

Jason's Animated Outpost
http://www.cyberisle.com/animate/home.htm

Classroom Clipart
http://classroomclipart.com/cgi-bin/kids/imageFolio.cgi?direct=Science

Regular and animated buttons:
http://www.buttonland.com/

Gif Animations
http://gifanimations.com/index.jsp

Teacher Files
http://www.teacherfiles.com/clip_art.htm

Zodiac Clipart
http://www.metta.org.uk/star/zodiac.asp

Dorling Kindersley Books Clipart
http://www.dorlingkindersley-uk.co.uk/static/cs/uk/11/clipart/home.html