Many thanks for this. You are very kind to go to all this trouble. I've now printed the notes you gave me the URL to. I have a lot of work to do so won't be able to get into Linux till some time tomorrow. Whatever happens, I'll get back to you and let you know how I get on.
Once again, thank you so much. You're a star. :D
Finlay
update: I followed your advice and the driver is now installed, the module loaded and the modem recognised....BUT I get all positive messages until "waiting for modem to be operational" then an error.
eagleconfig -w fails to synchronise the modem. I'm going to send the readout from eagleconnect to eagle-usb4linux and see if they can help, though I find their documentation very techie.