Google Maps / Virtual Earth map projection in MapServer

[Dave Weaver]

I'm trying to get my map in the same projection that's used by Google Maps &
Virtual Earth.

According to this article:

http://www.sharpgis.net/2007/05/05/SpatialReferencesCoordinateSystemsProjectionsDatumsEllipsoidsConfusing.aspx

the SRS string for the projection used is:

PROJCS["Mercator Spheric", GEOGCS["WGS84based_GCS",
DATUM["WGS84based_Datum", SPHEROID["WGS84based_Sphere", 6378137, 0],
TOWGS84[0, 0, 0, 0, 0, 0, 0]], PRIMEM["Greenwich", 0, AUTHORITY["EPSG",
"8901"]], UNIT["degree", 0.0174532925199433, AUTHORITY["EPSG", "9102"]],
AXIS["E", EAST], AXIS["N", NORTH]], PROJECTION["Mercator_1SP"],
PARAMETER["False_Easting", 0], PARAMETER["False_Northing", 0],
PARAMETER["Central_Meridian", 0], PARAMETER["Latitude_of_origin", 0],
UNIT["metre", 1, AUTHORITY["EPSG", "9001"]], AXIS["East", EAST],
AXIS["North", NORTH]]

How can I use this information in my map file to specify the output
projection of my map? (projections aren't my strong point!)

Thanks,
Dave.