Thanks for the link akosnitzky, I removed the IT policy.
Well Foxglove, when I phoned them up & asked if I could go online with my blackberry on pay as you go, he told me yes & that I would need to the £7.50 web browsing bolt on... I figured I wouldn't be able to use the whole push email feature but that was ok. Anyway, so my bolt on works just fine on my partners phone, but can't get it to work now on the blackberry. So you're saying that the unlimited web browsing bolt on won't work with the blackberry? If that's the case, I intend to phone them up & give them a piece of my mind... although I must say, their customer services doesn't usually give me incorrect information.
Although, I'm still thinking I might have missed something, because I suspect I might still be missing a setting or two. Anyway, thanks a bunch for the help, both of you, I will keep messing about & hopefully get to know it a little more