To set up your PlayStation 3 to connect to the Internet, you must establish a wireless access point. You can then use your PlayStation 3 to browse the Internet, download games and videos, and play against gamers around the world. Almost all versions of the PS3 (all except the 20GB) have a built-in wireless capability.
Turn off all your network equipment (modem and router) as well as the PlayStation 3.
Leave all equipment off for two full minutes.
Turn on your modem and router.
Make sure that your wireless router is connected to the Internet and broadcasting a signal.
Use a PC to ensure that all router settings are complete before turning on the PS3.
Turn on the PS3. Select Settings→Network Settings on the XMB and click the X button.
Now you’ll need to provide your router’s security settings.
If the PS3 is connected to a modem using an Ethernet cable, the wireless function will be turned off.
Choose Internet Connections and select Enabled; then scroll to Internet Connection Settings and press the X button.
If you receive a message saying that you'll be disconnected from any current Internet Connection, say Yes to move on.
Select the Easy option and press the X button.
Try the Easy setup first. If that fails, you can try the Custom settings.
Select Wireless and press the X button. Then select Scan and press the X button.
The PS3 will scan the surrounding area and produce a list of all the wireless access points in range.
If you have an AOSS (AirStation One-Touch Secure System) router, select Automatic instead.
Select your access point from the list and press the X button.
If you're not sure which SSID is yours, check with the person you set up your router.
Confirm your SSID and press the X button.
Select the security type that your router uses and press the X button again. You may need to ask the network administrator for the appropriate information.
Enter the necessary security key information and press the Start button; then, press the Right Arrow button to move to the next screen.
The security key will always look like eight asterisks (*) regardless of how long the security key actually is.
Enter any additional security information required by your router, and then press X to save the settings.
This will store the settings on your PlayStation 3 permanently, so that next time you just have to choose your network and you're ready to go.
Press the X button again to test the network.
Your PS3 will attempt to connect to the Internet. You should see Succeeded beside each attempt. If you receive a failed signal, turn everything off and try the set up again.
Select Network on the XMB.
You’ll need to go back to the home menu.
Select Internet Browser and press the X button.
You can now browse the Internet to your heart’s content.