Go to your local radio shack and ask them for a PSx to USB adaptor. this will allow you to use your old PS1/PS2 controllers on your PS3. if you want to use it as controller 1 hold the PS button on your PS3 controller and goto reassign controller and change it to controller 2. now your PS2 controller should be controller 1. I dunno if this will allow vibration on older PS2 games or not but none the less it will allow for more playes on your PS3 at a fraction of the cost.
http://www.gameasylum.us/play12ps2psx1.html theres one for $15 that actually allows 2 controllers. I dunno if it will work on the PS3 but the ones they usually have at radio shack will/should.
Here's another one.
http://www.jandaman.com/games.mvc?p=n64psx...tegory_code=N64