Could do with a little bit more information if you want us to help but I'm
going to have a stab anyway.
Are you using a laptop or a desktop? If it is a laptop, is the wireless
card built in? If it is a built in card is the card switched on?
If it is a card that you have installed yourself, have you installed the
drivers for it? If you did, did they install ok or did you get any error
messages?
If you go into Network Connections do you see a Wireless Network Connection
in there? If you do, what happens when you right click on it and select View
available wireless networks? If you see your network in there, what happens
when you click on connect?
Like I said a little bit more information about your setup would be very
helpful, but hopefully I may have pointed you in the right direction.
