Follow this step:
Log on to the host computer as Administrator or as Owner.
Click Start, and then click Control Panel.
Click Network and Internet Connections.
Click Network Connections.
Right-click the connection that you use to connect to the Internet. For example, if you connect to the Internet by using a modem, right-click the connection that you want under Dial-up.
Click Properties.
Click the Advanced tab.
Under Internet Connection Sharing, select the Allow other network users to connect through this computer's Internet connection check box.
If you are sharing a dial-up Internet connection, select the Establish a dial-up connection whenever a computer on my network attempts to access the Internet check box if you want to permit your computer to automatically connect to the Internet.
Click OK. You receive the following message:
When Internet Connection Sharing is enabled, your LAN adapter will be set to use IP
address 192.168.0.1. Your computer may lose connectivity with other computers on
your network. If these other computers have static IP addresses, it is a good idea to set them
to obtain their IP addresses automatically. Are you sure you want to enable Internet
Connection Sharing?
Click Yes.
On the client computer
To connect to the Internet by using the shared connection, you must confirm the LAN adapter IP configuration, and then configure the client computer. To confirm the LAN adapter IP configuration, follow these steps:
Log on to the client computer as Administrator or as Owner.
Click Start, and then click Control Panel.
Click Network and Internet Connections.
Click Network Connections.
Right-click Local Area Connection, and then click Properties.
Click the General tab, click Internet Protocol (TCP/IP) in the This connection uses the following items list, and then click Properties.
In the Internet Protocol (TCP/IP) Properties dialog box, click Obtain an IP address automatically (if it is not already selected), and then click OK.
To configure the client computer to use the shared Internet connection, follow these steps:
Click Start, and then click Control Panel.
Click Network and Internet Connections.
Click Internet Options.
In the Internet Properties dialog box, click the Connections tab.
Click the Setup button.
The New Connection Wizard starts.
On the Welcome to the New Connection Wizard page, click Next.
Click Connect to the Internet, and then click Next.
Click Set up my connection manually, and then click Next.
Click Connect using a broadband connection that is always on, and then click Next.
On the Completing the New Connection Wizard page, click Finish.
Quit Control Panel.