Stream mac screen to PS3

I have my PS3 setup with a projector that is on the ceiling (yup, its sweet), but I would like to view through the PS3 my macbook's screen so I can work with pdfs and powerpoint presentations on the big screen. Is there any way to get to do this? I really don't mind about lag because I will not be using it for gaming or videos.. Any ideas?

Thanks in advance

jimmypopjr said:

Your projector should have a VGA input. Can you run an additional cable and cut the PS3 out completely?

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It is not easy but I guess I could. I was just wondering if there is some way of using the PS3 to avoid that cable and have a wireless connection.