On the client computer (Mac OS X and a wireless NIC):
- Click on the AirPort icon at the top right of the screen.
- Click Create Network. A dialog called Computer-to-Computer should pop-up.
- Set name to ICS. Click OK.
- Open System Preferences from the Apple menu.
- Click the Network icon.
- Select AirPort from the Show Menu dropdown.
- Click the TCP/IP tab.
- Select Manually from the Configure IPv4 dropdown.
- Set IP Address to 192.168.0.2.
- Set Subnet Mask to 255.255.255.0.
- Set Router to 192.168.0.1.
- Set DNS Servers to 192.168.0.1.
- Click Apply Now.
On the host computer (Windows XP, Internet Connection (i.e. Cable or ADSL), Wireless NIC):
- Click Start -> Control Panel.
- Double-click Network Connections.
- Right-click Wireless Network Connection and then click Properties.
- In the General tab, select Internet Protocol (TCP/IP).
- Click Properties.
- In the General tab, select Use the following IP address.
- Set IP address to 192.168.0.1.
- Set Subnet mask to 255.255.255.0.
- Click OK.
- Click the Wireless Networks tab.
- Click the View Wireless Networks button.
- Select the network named ICS from the list and click Connect.
- Click OK at the next dialog telling you the network is open.
- Close the View Wireless Networks window.
- Click OK to close the Wireless Network Connection window.
- You should now be in the Network Connections window.
- Right-click Local Area Connection and then click Properties.
- Click the Advanced tab.
- Click the Allow other network users to connect through this computer's Internet connection checkbox.
- Click OK.

