This has worked for me on all my bikes and cars.
Remove pads. Take a file (or an angle grinder if you're brave) and file a 45 degree champfer off the edges of the pad material. Clean up the insides of the calipers while the pads are out and put them back in.
This method can also stop the clicking some of us get.
If you're rotors are all shiny and glazed, this will also cause a squeal, so take a piece of fine emery and scuff the rotor up a little, taking care not to make it too rough.
Mick
[ This message was edited by: miker on 2006-08-21 20:29 ]