importing raster files from Idrisi4.0 for DOS

Dear GRASS users:

I am having troubles importing files from idrisi4 for DOS, and hereby securing
helps from you. I posted the same request two weeks ago, but have not got many
responses.

1. I exported idrisi4 files using ascii raster format. Then I edited the
files (deleting the first two lines of projection and zone, so there are six
lines in the header part). After ftp them to GRASS, I ran r.in.ascii to finally
get GRASS format raster files. Everything looked okay. However, when I tried to
display it using d.rast (and p.map), it was blank--three or four non-sense
colorful lines at the top, and elsewhere was just white. I checked the file
under cellhd directory. It reads:
   proj: 1
   zone: 16
   north: 4386270
   south: 4351770
   east: 730110
   west: 686490
   cols: 1454
   rows: 1150
   e-w resol: 30
   n-s resol: 30
   format: 0
   compressed: 1
   
Actually the file is of UTM 16, and it is within the current region. I am not
sure of the last sentence above. Does it mean that the file is compressed so
that GRASS could not process it correctly?

2. I also tried to export from idrisi using binary format, which produces two
directories--cell and cellhd, each of which contains one file of the same name.
In grass I then ran r.support to get a color table for it. However, this time it
was even worse--I couldn't get the file done.

I am stuck. Could someone give me some hints? Thanks a lot.

Houxiang