Click the "Start" icon in the lower left-hand corner of the screen. Click "Set up a Connection or Network" on the left side of the screen. Click 'Next' and read the information presented. Type a name for the network in the "Network Name" box. Allow the computer to complete the network setup. Read more from http://www.ehow.com/how_10055919_ad-hoc-laptop-xbox-360.html.