Help me with Airport please!

[Voraka]

Hi! I have no idea what i'm doing! I have an iMac Tiger with built in Airport. I want to turn my wired internet to wireless through it. My cousin did this for me before and all was good, until i messed something up. I have been googling for hours but still have no idea what to do to make a network thingy. Please explain everything to me in the simplest instructions you can think.
Thanks
voraka

 

[bartelby]

You want to share your internet connection?

System Preferences -> Sharing ->Internet.

Share your computer from: Built-in Ethernet

To computers using: Airport

Start Sharing.

 

[g4cubed]

I think he need to go to

Applications>Internet Connection>Airport tab. There's an on/off button.