Sterepgraphic Projection

[Ryan Ollerenshaw]

I am trying to project my data to a stereographic projection using the 
following definition in my mapfile.  However this appears to be just 
stretching one pixel of my image across the screen.  Any ideas on what i 
could be doing wrong?

Map object extent:
 EXTENT 0 -90 360 90

Map object projection
 PROJECTION
    "proj=stere"
    "lon_0=90"
    "k=10"
    "lat_ts=0"
  END

layer object projection
 PROJECTION
    "init=epsg:4326"
END