how to retrieve an Arc/Info file

Hi, my name is Leticia. I was wondering if somebody can give me some
hint on how to read an Arc/Info raster file with Grass. The file is
in Arizona State Plane coordinates (feet). Actually I have vegetation
coverage split onto two files and I need also to recombine them. I'll
appreciate some answer, whatever it is. I'm not on the mailing list
so please send replies to

leticia@gizzard.hwr.arizona.edu

Thanks, Leticia.