Defining a projection for SetProjection()

[David Stajan]

Hi,

I'm trying to allow my website to change the projections of the map via a user 
control.  Sounds simple enough using the SetProjection() function!

The problem that I'm having is I can't figure out the proper projection defintion 
to define the projection in a PROJ.4 syntax  For example I have this projection 
defined by a ESRI prj file:

PROJCS["AGD_1966_AMG_Zone_55",
	GEOGCS["GCS_Australian_1966",
		DATUM["D_Australian_1966",
			SPHEROID["Australian",6378160,298.25]],
		PRIMEM["Greenwich",0],
		UNIT["Degree",0.017453292519943295]],
	PROJECTION["Transverse_Mercator"],
	PARAMETER["False_Easting",500000],
	PARAMETER["False_Northing",10000000],
	PARAMETER["Central_Meridian",147],
	PARAMETER["Scale_Factor",0.9996],
	PARAMETER["Latitude_Of_Origin",0],
	UNIT["Meter",1]]

My best attempt to define this using the proj.4 syntax is:

PROJECTION
"proj=utm"
"zone=55"
"units=m"
"ellps=aust_SA"
"lat_0=0"
"lon_0=147"
"x_0=500000"
"y_0=10000000"
"k_0=0.9996"
"a=6378160"
"rf=298.25"
"pm=greenwich"
END

Can anyone help me out?

Thanks
David