Okay, here's the adjusted dosbox.conf to get it run on Linux (which has case sensitive file paths/names) with fullscreen in 1600x1200 and OpenGL renderer:

----------------------------
...
fullscreen=true
fulldouble=true
fullresolution=1600x1200
output=opengl
...
[autoexec]
# Lines in this section will be run at startup.
mount C .
imgmount D ./CARPET.CD/GAME.GOG -t iso -fs iso
D:
cd CARPET
cls
CARPET.EXE
exit
--------------------------------------

And here's my start script to start it with the native Linux version of DOSBox:

-----------------------------------
#!/bin/sh
DIRECTORY=$(cd `dirname $0` && pwd)
cd $DIRECTORY

# Start with nativ Linux dosbox (0.74):
dosbox -conf dosboxMine.conf -noconsole -c "exit"
------------------------------------

:-)

Thanks, works well on my Arch Linux-running laptop now :)

Some recommended tweaks:

fullresolution=0x0 [desktop resolution]
output=openglnb [no bilinear filtering]

aspect=true [for correct aspect ratio on widescreen monitor)

Cool - didn't know that.

Is it possible to increase the visual depth so that your viewing distance gets greater?