[entwisi]

Data connections from laptops over 3G are generally Very expensive. My initial suggestion is to use your phone as a modem(most 3G phones are able to do this). it just needs setting up on your laptop. The connection can be either USB cable, Infra red or bluetooth. You do need to know what its going to cost though, its very easy to run up £100+ bills if you don't know what you are doing.

There are other options, I need a bit more info on what you are trying to achieve so I can advise you more accurately