I checked out your suggested site, thank you.
I had another look at my green cable (the longest of the 2) and written on it is "patch cable to....etc." I can't access the blue one as it is at the moment in accessible.
So what I intend to do when my new Ethernet Switch arrives is to use the blue (existing Ethernet cable) and the green cable in the following manner.
Blue cable from the DSL modem to the Ethernet Switch and the green "Patch cable" from the switch to the computer.
Can you see any problems with this?
Thinking hurts my head that's why I live in West Australia