About.com has it up as the block of the month with good instructions. I think they were looking for some help with the math aspect of it. I think that the whole 7/8th inch thing puts people off. I just round up to the nearest whole inch and then when the hst is sewn I can trim it back. This helps too when you are not that accurate with cutting or the seam allowance. I believe that the person was looking to make the block from 5" charm squares, and could not figure out the math, I have it I think so if you want to see what I figured out just let me know.
http://quilting.about.com/od/blockof...the_lake_3.htm