Originally Posted by creativeshark
I downloaded the zip 1.02 script app, but I've not yet found the unzip 1.0 script app...
You don't need an special unzip script. ePubs are just ordinary zip files, arranged in a certain way. You can unzip them using your regular unzip tool ("unzip" in the Terminal, or just add a .zip extension to the filename and double-click in the Finder).
Hope this helps, and welcome to MobileRead!