How do i connect my PS3 to a wireless internet??

i've tried everything, and after setting everything up as the manuel says, at the end it says "test connection" i test it, but it ALWAYS fails. i juts got my PS3, but i have a firend whos had one for about 4-5 months and they can't set up the internet either. any help??Once you run setup reset the router ( unplug and replug it in) so it finds the ps3.

Goto settings

Goto network settings

Goto network connection, select enable

Goto Internet connection settings just below internet connection-

Push yes when it says you may be disconnected

Select wired or wireless

For wireless use scan or enter manually

Follow on screen instructions.First of all you need to have a broadband connection and a wireless router. You need to make sure that if your network has a wep key that you are entering that key on your ps3.