O2

Ubuntu Linux 9.04
Insert Modem into USB socket.

Dismiss the Mobile Broadband Connection screen that ask for a password.

Number *99# Username o2web (thats an o for oscar not a zero) Password password APN m-bb.o2.co.uk (thats an o for oscar not a zero)

and clicked Ok once I had entered the above details.

but with no credit no web pages will load apart from the top up page)

Go to URL http://mobilebroadbandaccess.o2.co.uk and from here you can choose how much data you want to buy. Happy days.