Things You'll Need
Instructions
Turn on both your console and laptop and connect them with an Ethernet cable. This local area network connection will allow your Xbox 360 to share the Internet with your laptop.
Open the "Network Connections" menu on your laptop to view the local area network connection and wireless connection. Check the tips section for individual instructions for your operating system.
Highlight both the icons representing your "Local Area Network" connection and wireless connection by holding the "CTRL" key and clicking once on each icon.
Right-click either of the highlighted icons, then click "Bridge connections." Once the bridge completes, your Xbox 360 will be able to connect to Xbox Live.