Display GeoTIFF-data (>8bit) with the Mapserver

[Wolfgang Qual]

We purchased IKONOS-Satellite images (data format GeoTIFF, 16bit) and
would like to get it into a mapserver map. However, this data is not
supported by the mapserver. We got the error message:
"drawTIFF(): Image handling error. Only 1, 4, and 8-bit images are
supported."
Tried to make a 8bit GeoTIFF of it using the gdal-utility rgb2pct.py,
but it just produced strange results (strange colors).

Anybody there, who managed it to put such data into a mapserver map? How
can I produce a nice 8-bit image of the data without losing the
information of the satellite image?

Thanks.


Wolfgang Qual