Control PS3 with a PS2 IR Remote

So I'm thinking my Harmony 659 should be able to control my Playstation3. I wasn't sure if the PS3 has an infrared receiver so I did a Google. Turns out it doesn't. Boo!

But then I read about using a PS2 infrared dongle with PS2->USB adapter. Had to tear my house apart to find my dongle and it's far from perfect, as only half a dozen buttons work and the power button isn't one of them. But it sure beats the hell out of using a gamepad to control DVD/BD playback. Shazam!