See the bottom 2/3rds or so of the page at the next link:
http://www.freewebs.com/glenster1/experiments.htm
http://img386.imageshack.us/img386/7384/photomanip0fm7.jpg
http://img388.imageshack.us/img388/254/photomanip1uk6.jpg
http://img386.imageshack.us/img386/3533/photomanip2hl1.jpg
http://img388.imageshack.us/img388/8318/photomanip4sb9.jpg
http://img388.imageshack.us/img388/758/photomanip5yh6.jpg