Can you tell us what we are trying to deal with. Make, model, laptop or desktop, Vista/XP?
If you can connect the computer to the modem via RJ45 cable then you will have internet access. Restart your computer now and with a bit of luck then Windows will find new hardware and reinstall the driver automatically.
If not, then Go to Start>Control Panel>Device Manager. Look for Network Adapters. Click the little + on the left hand side and see what shows up - you should have 2; one for the cable card and one for wireless. Right click on the wireless one and choose enable
If things are going well, you can go to Control Panel again and choose Network. Look for options to Connect to a Network. If your router is shown, highlight it and choose Connect.
Fingers crossed, you will now be away laughing again.
Edited by rowal5555, 12 June 2010 - 04:20 AM.