Step By Step Media Server for WMP 11

Here is a different way to do it, see if it helps.

This is how to set up media sharing using firmware update 1.80. You must have your PS3 connected to your computer via a network. (Meaning it must share the same internet connection as the pc you are trying to connect it to.)

1)Download Windows Media Player 11
2)Install Windows Media Player 11
3)Once installed click on Tools in the title bar
4)Click on Options
5)Click on Library
6)Click on Configure Sharing
7)Click on Settings
Make sure Allow New Devices and Computers Automatically is checked
9)Make sure All Ratings are checked
10)Click on OK

Everything should work fine. The PS3 should automatically detect your PC now. If you want to add pictures for your PS3 to see them they must be in the MyPictures folder of your main account on your PC.

Now you can have all the music, videos and pictures from your PC right on your PS3!