import of binary files

[Andrea Giacomelli]

I have a binary file containing raster data. How do I make it 
accessible by GRASS ? Do I have to manually create the files
for cellhd,colors etc ?
I have been browsing through the on-line manual, and though I have
found things such as r.in.ascii, I could not seem to find what I need,
even though it seems VERY strange.
I thank anybody who will solve this (stupid, but basic) problem.
 
                                       Andrea Giacomelli
                                     andreag at idra1.iar.polimi.it

P.S. I have been using GRASS for two days...