For those of you who have got the scripting bug, I've posted a link to the Catia V5 Automation help guide. This "chum" file describes, in gory detail, the entire Catia object model. That means it describes every object, method, and property available to someone wishing to automate Catia through scripting. When you use this help file in conjunction with the scripts I will provide, those you create through macros in the UI, and stuff that you dig up on the web, you should start to develop a pretty clear idea of how the Catia object model works.
Also, I've posted a file called "Catia Scripting.zip" which has a couple of powerpoints and PDFs with descriptions of simple automation operations. I'm digging up more automation examples and will post them as become available.