Ah, perhaps I am getting somewhere:
I tried your suggestion with sudo apt-get install and got a long list of output which essentially seemed to suggest that older packages would be replacing newer ones. At the bottom, I got a message saying:
"Try apt-get -f install without any options."
This I did and it worked for a while and at the bottom, I got a message saying:
"Errors were encountered while processing:
E:Sub-process /usr/bin/dpkg returned an error code (1)"
Problem is: I don't even think I have a proper network connection, but I can boot from CD and copy the file over from this PC. Hope I will find it somewhere for individual download.
Will try that now unless you have a better idea.