Thank you Milo - did that sequence - wouldn't allow the configuring as it said that connection was already configured, so added a 2 to the connection ID (Plusnetwireless2) and it accepted that. However, when I checked for valid IP addresses, ... ZILCH , or, rather, "invalid address"
Interesting comment from AO - I have connected the lappie via ethernet cable and it is quite happy with that - just this ^%&"*** WiFi thing has problems