First Time- Need Help With Internet

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http://forums.fedoraforum.org – I saved my father's old laptop by installing Fedora off of a dvd included in Linux For Dummies. Everything is working okay, except for the internet connection. When I right-click on the Network Manager applet, it gives me a menu with only Enable Networking, Connection Information, which is faded and unusable, and About. What do I do to connect the laptop to our WiFi connection? Also, before the laptop died, it was running Windows XP. It would not log onto the internet at our house, but it would connect everywhere else. This makes me wonder if something is wrong with the wireless card. Th (HowTos)