Handle With Linux

using 3G usb modem with linux (ubuntu 8.04)
Today i have a hand on a 3G usb modem and i was sad that it only has drivers for both windows and Apple
so i connect it to windows to see how it works
it install the driver automatically and then a software is installed that allow it to dial by just clicking Connect (easy windows)
after i successfully use it under windows i start searching for how to make it work with linux