remove double quote character from file names

Hi all,

A little help on the way, I need to find and remove the double quote (") 
character from all files in a directory structure containing hundreds of 
thousands of files.

I am sure plenty of you have done this before... I've gotten as far as

find . -type f -name '*"*' -exec rename 's|"|in|g' {} \;
find: rename: No such file or directory

The find part works but not renaming so I'm missing something there.

Thanks,
Per