Two different methods. (1) peer to peer with need one wireless adaptor (PCI or usb) on your base PC and one wireless adaptor (usb or PCCard) on your laptop. (2) Wireless router way, you need one wireless router to connected to your base PC (better to have one with more than one wired portm so you can connect modem to router as well then you do not need to switch base machine on if you only use laptop for internet) and you also need wireless adaptor for your laptop. All components can be found from ebuyer dabs etc. The first setup is cheaper, but the second one is easy and can add more machines if you want.