The PlayStation 3's wireless network adaptor allows you to connect to to your laptop over a wireless network. You can then watch movies, listen to music or view pictures on your PS3 without the hassle of transferring them with USB stick or external hard drive.
Open Windows Media Player 11 and click the arrow underneath the "Library" tab. Click "Media Sharing," then click the "Share my media" box. This tells Windows to stream media in your library to other devices on the network.
Connect your laptop to your wireless network by clicking on the network connections icon on the right side of the Windows taskbar and selecting your home network from the list. You may need to enter the password you set when initially setting up your wireless router.
On your PS3, open the "Network Settings" panel under the "Settings" column. Select "Yes" on the following screen stating that you will be disconnected from the Internet while making these changes.
Select "Easy" from the following screen, then select "Wireless." The "WLAN Settings" screen will open.
Select "Scan" from the "WLAN Settings" screen. Choose your home network from the list the PS3 shows. Press "OK" to confirm your network choice.
Pick the type of security your home network is using from the following screen. By default, most routers do not have security enabled. If you do not know which type of security your home network uses, ask the person who set up the router.
Enter your home network password, if it requires one. Highlight the text field and press "X" to open an on-screen keyboard to enter your password with. After you enter the password, the PS3 will set up a wireless connection to your home network. Press "Circle" to return to the PS3 menu once the connection has been set up.
Open the "Network Settings" panel under "Settings" on your PS3 again. Select "Media Server Connection," then select "Enable."
Go back to the "Media sharing" window in Windows Media Player. Select the PS3 from the box below the "Share my media" option and click "Allow."
This process allows you to use files stored on your laptop with your PS3; it won't allow you to access files stored on your PS3 from your laptop.