Covert GRASS file to GRID in ARC/INFO?

Dear GRASS netters::
  
  I am new in this net. I am not familiar with GRASS files either.
Right now I have a GRASS file, which is 2.3 megbytes binary. I need to
covert the file into GRID, which is in ARC/INFO 6.1 on SUN station.
I tried the IMAGEGRID command in ARC level. But I got the error message
said:
  Window cell size does not match layer cell size
  bail out the convertion
I include my header file for the GRASS file below. Is it the problem
of cell resolution specification in the header file? By the way, the
projection for the GRASS file is lat/long.
  
  Could someone tell me what I should do to convert the GRASS
file to ARC/INFO? Thanks in advance.

proj: 3
zone: 0
north: 90N
south: 90S
east: 180E
west: 180W
cols: 2160
rows: 1080
e-w resol: 0:10
n-s resol: 0:10
format: 0
compressed: 1

Tong Zhang
tongz@titan.ucs.umass.edu