Ok. This is from the k3565, on my old notebook running Ubuntu 9.10. You have to install ozerocdoff and the usb-modeswitch to get it to work. However, it disconnects any other usb memory devices attached when you plug in the modem (plug them out and back in and they work again). I'll check whether the same happens on the NC10.
I haven't loaded the vodafone-mobile-connect at this stage, so don't have the betavine app up to test.
To activate the modem click on the network connection icon and do what it tells you. Then right click on the network connection and edit mobile broadband. Under the IPv4 tab change auto (ppp) to auto (ppp) address only, then add the following dns servers: 196.207.40.165, 196.43.46.190. Disconnect by clicking on the network connection icon and then reconnect. (This may not be necessary, as I had an ethernet connection attached when I booted and it probably had webafrica's dns servers up)