[papasmurf]

Your dhcp server should be like an ip i.e. 192.168.0.1 or ?

[jdm]

A lot of those (please see screen-capture below) have 0.0.0.0 - how do you know which one's to change, though?

Is is the heart of the problem, perhaps. Thanks for your help and persistence. Most appreciated.

[jdm]

Also, when I opened up the last folder underneath the “Interfaces” tree, there is an entry called DHCPServer which has 255.255.255.255 as its value.