As title I will explain how to turn your MacBook into an Access Point to share the connection with any other Wi-Fi like the iPhone, iPod, iPad, etc.

Here we go:

1. Open System Preferences.
2. Click on Sharing.
3. Select Internet Sharing.
4. Select share the connection from: and then select the source of the connection.
5. Select computers using: click on Wi-Fi.
6. Finally click on Wi-Fi Options and then we appear the settings window where we can choose the network name, channel and password for the WEP key.

Finish! :-)

Now we have a nice network made from our beautiful MacBook! ;-)