|OK- one step forwards.|
I've installed the Toshiba Wireless LAN Driver & WiFi Client Manager (the US site is clearer than the UK site).
Now the problem is actually configuring WiFi through Wireless Network. I'm honestly thinking it might be easier to install an external device as the network device switch isn't easy to use and it looks as though there are various conflicts in the system.
I'll try this on a test system in VirtualBox.