install OS X USB driver for RB-730

I am trying to get my Mac to detect the RB-730 response pad in SuperLab, so I am currently trying to install the USB driver that is on the website for Mac OS X, but every time StuffIt tries to unzip the file, I get an error message. Has anyone else had this problem or know how to fix it?

Try using the zip capabilities built into OS X. Right-click the file, go to “Open with…” and select “BOMArchiveHelper.” This is the default for OS X for archives of this type.

thanks

Thanks for the suggestion–it worked!