Two ways, PM
Open a Terminal (Applications → Accessories → Terminal) and enter the following command:
Insert the first disc and follow the instructions (it will ask you to name each disc). When apt-cdrom is finished with the disc, eject it with
(yeah, just type it in and hit Enter) and insert the next and use the same command. Repeat the process per disc.
Once the last disc is done do this:
sudo apt-get update
sudo apt-get upgrade
Basically the same steps as above, but instead of having to burn the ISOs into DVDs, you point synaptic to the mounpoint.
You will have to comment (disable) the repos that the CD/DVD contain in sources.lst by adding a hash mark (#) before the deb line.
sudo synaptic --add-cdrom /media/iso/
Excellent howto here -->http://ubuntuforums.org/showthread.p...t=synaptic+ISO