Currently its connected to my main home Dell Dimension Desktop via a BT Voyager 100 USB ADSL Modem.
1. Wired, connect via a crossover cable direct to laptop and enabe internet connection sharing.
2. Wireless, fit wireless cards/ dongles to both machines and share the UBS modem as above click here
3.Buy a router/modem and wireless cards for both machines and connect wirelessly
for begginners guide to ADSL