Can't Connect To Internet After Reformat?

just reformatted my bros laptop the other day and reinstalled windows xp home, he bought the computer off of a friends so he doesnt have any of the driver discs or anything else that came with it, after reinstalling windows, I couldn't connect to the internet with it so i went to the hp site to get the network drivers for his laptop and installed them via a disc i put them on from a computer that does have internet access working, so now its saying its wireless is connected but when i try to access internet explorer it asks me if i want to work offline saying there is no connection. In network connections there is no local area network, and in device manager for network theres only 2 under it 1394 net adapter and Broadcom 802.11b/g WLAN, there are other devices with ? and ! attached to them, im not sure if they have to do with the problem or not just trying to get the internet working on his laptop so he can download the rest of his drivers/updates then but the other devices with ! or ? are: base system device x3, coprocessor, other PCI bridge device, PCI bridge device x2, SM bus controller, Universal Serial Bus (USB) Controller, Unknown devicex2, USB device, Video Controller (VGA Compatible)[CODE]