You may be able to do it via Bluetooth (if you don't have bluetooth on the laptop, you can pick up a usb stick for very little).
http://www.blackberrycool.com/2009/0...th-mac-and-pc/
You should be aware that most mobile tariffs are limited (even if they say otherwise) to a set amount of data. It's not easy to get to those limits on a Mobile, but is easy on a laptop.