I thought that I’d pass this little App along…
I recently had to format the boot drive on my MacPRo and as I have 4 drives, I moved the files around to permit me to work on the boot drive. When I reinstalled everything many of the file permissions had changed which was a serious problem and while I tried to use terminal to batch change permissions it was a bit cumbersome and then I found this app which with a few clicks the job was done.
http://www.macupdate.com/app/mac/6440/batchmod
Check it out, a great utility!