If people are having issues then report the problem within the stated time constraints by law, 7 days trial period, no questions asked returns, and then upto 28 days for 'signal' issues. Dont go com ...
As an alternative to using the Windows network as above, you can now get quite cheap routers that will take 3G dongles. I have an Edimax 3G-6200n which is described on my site here http://www.jarviser ...
I experienced the same uncertainty with the Huawei E160E Orange dongle. Nobody knew if it would work. Huawei didn't have any drivers etc etc. But I tried it with someone else's RC version of Win7 and ...