I've found several sites but particularly like the first.
http://quilting.about.com/od/fabrice.../burn_test.htm
I like about.com because they have almost everything; at the end of this article are more topics of interest for quilters.
http://www.lindrix.com/fabcontent.html
Easily read chart
http://www.fiber-images.com/Free_Thi...ent_guide.html
this is also in a chart format but I think the last column should have been the first;-)
http://www.fabrics.net/fabricsr.asp
http://www.fabriclink.com/University/BurnTest.cfm
Hope this helps.