You can't. You must be licenced by Sony in order to do so. Last I heard the licencing fee's were in the
100's of thousands. (10 grand)
Thanks guys,Too bad it's not has open has microsoft's XNA.
They have a much easier system to program on, not to mention the Windows OS and framework libraries on their side. But yea, XNA is definitely an amazing thing that will show its true power in the future.
I guess if I wanted to give a smart remark, I would say create a game in Flash and play it in the PS3's browser.