Imagery file compatibility

[LAUER, JOHN WESLEY]

I am trying to get GRASS 4.1 to recognize a landsat thematic mapper .lan file. 
 The only way that I can find for GRASS to convert this type of file into the 
raster format that it wants is to use the tape extraction utility i.tape.tm.  
Is there any way that I can extract the imagery bands that I want from the 
.lan file that I have on my hard disk?  Would it work if I copied it over to a 
tape? 

The .lan file that I have is not the original file shipped out by the 
provider.  It was clipped in ARC-INFO into a much smaller file, cutting its 
size from 40 meg to 2 meg.  We did this so that it would fit on a floppy and 
could be transported easily.  Now I have the file and am very frustrated that 
GRASS doesn't seem to allow me to use it.  Any suggestions would be greatly 
appreciated.  

Wes Lauer
Walla Walla College
College Place, WA
Email lauejo at wwc.edu