Virgin Mobile Stick Is Not Working?

I purchased a Virgin Mobile Online Stick where you do not need a telephone jack, modem, router etc. or anything to go online, It's like, go online from everywhere, like at&t offers it too. Costs like 40-50 bucks a month.But I cannot go online. i insalled the stick and when open the icon, it connects and says ready, but I cannot reach ANY site at all.I saw in the network section that there is a little red x infront of the locale area connection and it always says, connect a cable. But this should not be the cae since you do not need any kind of cables with this stick.A friend of mine and I had the same stick from at&t and it worked perfect. We just double clicked the at&t icon on the desktop, clicked connect and everythng was great and we used it to 100% in the car missing or doing wrong?PS: PC runs on Vista AND, when calling Virgin, they just tell you, that's not there problem because it shows that it is connected, which is true, but still cant reach ANY website