Link

David Carney, subscriber to the ubuntu-users mailing list had shared the following script to enable mounting ISO cd images from within the Nautilus File Manager, by right-clicking on the iso file to be mounted. You have to create a /media/ISO directory before you can use the script. For more details on how to install scripts for Nautilus, read the How to Install a Script part of the g-scripts faq.

I quote the entire mounting and unmounting script below:

Code:
MOUNT ISO FILES:

#!/bin/bash
#
for I in `echo $*`
do
  foo=`gksudo -u root -k -m "enter your password for root terminal
access" /bin/echo "got r00t?"`
sudo mount -o loop -t iso9660 $I /media/ISO
  done
done
exit0

UMOUNT ISO FILES:

#!/bin/bash
#
for I in `echo $*`
do
  foo=`gksudo -u root -k -m "enter your password for root terminal
access" /bin/echo "got r00t?"`
sudo umount $I
 done
done
exit0