Instructions
Launch Windows Media Player 11 from your laptop computer. If you don't have it installed, you can download it free of charge from Windows update.
Click "Library." Select "Media Sharing" from the options and check the box next to "Share Media."
Click the box next to your PlayStation 3 and choose "Allow" to give the device permission to access the media server. Click "OK" to confirm the changes.
Turn on your PlayStation 3 and scroll to the type of media you want to view from photo, music or video. Choose the file you want to play.