Following our discussion in the Beginners Night (2 April 2009) I have been sent this link.  http://www.digital-slr-guide.com/how-to-read-a-histogram.html
Hope this helps
Following our discussion in the Beginners Night (2 April 2009) I have been sent this link.  http://www.digital-slr-guide.com/how-to-read-a-histogram.html
Hope this helps