CS3 raw image previews OSX 10.7

Morning everyone..wondered if someone might be able to help.
Just loaded CS3 on to my new Imac i5 .
I cant see previews from my Canon CR2 raw files in bridge.
If i double click the icon , the images open in photoshop ok.
I have placed camera raw 4.3.1 plug in in the plug in folder in both bridge and photoshop but to no avail.
Grateful for any assistance.

Regards

PM

I Can't remember where the ACR plug in goes in CS3, however if you go to Help, and click " Check for Updates" it should download and locate the latest version of ACR for you. This should ensure that you have the latest available update downloaded and placed in the correct location

thanks

Thank you!
After a few attempts that has done the trick
It spat a lot of the updates back ..but the camera raw is ok now
I appreciate you taking the time replying

Regards

PM