In CS2 if I edited a photo in ACR, I could then right click on any RAW file in Bridge and apply the same changes I previously made in ACR. It was pretty handy. I can't seem to find how to do this in CS3.
Can it be done? Has adobe removed it to get me to buy Lightroom?
nah, despite BridgeCS3 being a slow dog, you can still apply your previous RAW settings
as you said, right click, then look for "Develop Settings"
under, or next to, that Develop Settings selection you should get a dropdown giving you the options for applying last settings, defaults or saved settings