If you haven't did so already, Install Windows Media Player 11 from HERE (Validation is required, Make sure you have a legal Windows.)
Now, start it up and click on the arrow below the Library tab,
Now click on "Media sharing".
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You will get this:
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Set it to the same setting I have. (Check boxes!)
Now go to your PS3 and sellect "Search for mediaservers".
It should bring up one server called "Your PC name: Your account name:''
Example: "MASTER_PC_SERVER: Administrator:".
Now return to the WMP11 screen and you will see a new device is added.
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Select it and click on Allow.
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Reboot your PS3 if it says you can't view the content.
Now, Import media into WMP and you are done!
Grt, Savage :)