We're taking a number of calls regarding the installation of RapidFixer in CS3. Nearly all of them are related to how the files are unzipped and placed in the StartupScripts folder.
Files should be unzipped so that they retain their directory structure (you should have a folder named "Rapid Fixer Buttons" with all the buttons in it after unzipping.)
If all your buttons and the script itself are unzipped into a single folder, you need to change your unzip settings as outlined in this thread.
http://thedambook.com/smf/index.php?topic=2536.0Peter