Reformatted Laptop Wireless Networks Not Available?

I had the XP Security Center virus and, perhaps foolishly, reformatted - or more formally, "system reformat" for "returning the computer to factory conditions", as my friend who helped me with this process called it - my computer and reinstalled the operating system. But when I turned it on for the first time, there was, naturally, no internet connection. However, while I would normally proceed to set one up, there was, for some reason, no "View Available Wireless Networks" option when I right click on the little connection icon at the bottom right hand corner of the screen.