John Annett told me that the only good thing u can do with a Canon 18-55 kit lens is take it off, spin it round, hold it against the camera and macro.

You can even buy this attatching piece off ebay:

http://cgi.ebay.co.uk/52mm-Macro-reverse-reversing-ring-for-canon-lens-UK_W0QQitemZ370353517520QQcmdZViewItemQQptZUK_Photography_DigitalCamAccess_RL?hash=item563aca33d0