Your laptop has wireless capability built into it - which means that if there is a wireless access point within range, your computer should be able to detect it and 'talk to/via it'. For you to go wireless at home, ie. to use your laptop wirelessly on the internet, you need to have a wireless router connected to your telephone line (BT). So, if using Broadband, you need to connect your ADSL connection from your phone socket to a wireless router. This then becomes your home access point, and your laptop talks to the router.