Re: something wrong with xorg.conf
You can't save it cause you don't have permission to.
Open it as root
and you'll be allowed to save it.
gksu abiword /etx/X11/xorg.conf
N.B. that protection isn't meant as a nuisance but rather because you can screw up rather quickly by editing that file. Make sure you know what you're doing.
I'd rather advise you not to.
One ought, every day at least, to hear a little song, read a good poem, see a fine picture, and, if it were possible, speak a few reasonable words...