The best method detailed so far is here: http://gstwins.com/gsboard/index.php?topic=24039.msg246158#msg246158
Supplements: http://gstwins.com/gsboard/index.php?topic=17561.msg157259#msg157259
http://gstwins.com/gsboard/index.php?topic=9300.msg76492#msg76492
http://gstwins.com/gsboard/index.php?topic=23635.15