Using scripting to automate PDFs from an .indb file

Is there any way to create a script that will export all of the existing chapters in an InDesign book to individual PDFs, all at once? If I select all the files and hit export, it exports into one honkin' great big PDF file, and I need to keep the chapters separate. Please advise.

Also, I'm using InDesign CS3. Thanks!

Best,

Chryss