Some people here were interested in this, so I'm reporting my first results. I've been too busy playing 360 games but I thought this was getting overdue.
is where they sell the adapter that lets you use your 360 controller on the PS3.
For a wireless controller, you need the Microsoft Wireless Adapter, which may or may not be easy to come by now like in the days gone by when I bought mine. It's offered by the Cronus people at $15.
You SHOULD be able to just plug-and-play, but I ran into an issue where the PS3 didn't recognize the adapter right out of the box. It comes with configuration software, which has the lamest user interface I've seen in a while. Your best bet is to run CronusCFG and set the Cronus adapter to PS3 only output. That SEEMED to be the fix. WARNING: you are making live updates to the device as you change the dropdowns on the screen. Double-check everything before you remove the USB cable and try out your changes.
Also, while you're in there, you can swap the shoulder buttons with the triggers. I have been trained by lots of 360 software to use the left trigger to scope and right trigger to fire. Uncharted 2 expected me to use the left and right shoulder buttons for those jobs. I failed so miserably at Uncharted 2 that I don't remember if that was the case using the PS3 controller. Once I saved a new profile
(no, the default profile can't be swapped) to the Cronus with those thing swapped, I was able to play the game exactly as I expected, which is to actually KILL things and progress the game. Far, far better, which I'd expect for nearly $60. If you play all your PS3 games with the standard setup and don't want to change, you don't have to do a thing.
still lists a coupon that I used to get 10% off, which offset the shipping and gave me a tiny net discount.
Very happy so far. Hoping it works forever or until I don't have a PS3 anymore...