The link below will take you to an HDR version using Picture Window Pro as edited by Den. He is pretty much considered one of the gurus of this program by Johnathan Sachs creator of Lotus 123 years ago.
Link:http://www.ncplus.net/~birchbay/BruceB/SigmaDP-1_river/index.htm
Link:http://www.ncplus.net/~birchbay/BruceB/SigmaDP-1_river/index.htm