projection problems

Dear GRASS-user,

Currently I am working with DTM-raster data using GRASS4.1.

The standard region (Mercator) is set to the third central meridian
(9 degrees = 3,500,000 meters). I would like to project this data to
the second meridian (6 degrees = 2,500,000 meters) using GRASS4.1.

Does anyone has knowledge of a GRASS4.1 command performing this kind
of projection for the whole rastermap?

I do appreciate any idea to solve this problem and I thank you
in advance for helping me.

Marie Luelff
marie@linus.uni-muenster.de