I am also interested in this. About the only site I have found to be of any use is
http://www.aquabotanic.com/dutchsecrets.htm and the article
http://www.aquaticplantcentral.com/forumapc/library/12064-dutch-aquascaping-basics-overview.htm posted in the Library here on APC.
I hope someone has more info than this. It seems like a project you have to have a firm grasp on before you start.
dale