[Proj] Polar projections

[Ryan Ollerenshaw]

I am trying to project the norther hemisphere of my dataset in a polar 
projection using MapServer but i have yet to get an image to come out 
correctly here is what i have:

the extent of my data:
EXTENT 0 -90 360 90

projections that i have tried:
PROJECTION
    "proj=stere"
    "lon_0=90"
    "k=1"
    "lat_ts=0"
END

and

PROJECTION
  "proj=ortho"
  "lat_0=90"
END


the projection my layers are in:
PROJECTION
    "init=epsg:4326"
END