plugging the gaps in Spotlight.. ,

• “Creating Spotlight Plugins” > http://www.macdevcenter.com/pub/a/mac/2005/07/15/spotlight.html
• “ Spotlight Importer Programming Guide” http://developer.apple.com/documentation/Carbon/Conceptual/MDImporters/index.html
• Lisp metadata importer > http://lemonodor.com/archives/001232.html

http://developer.apple.com/documentation/Carbon/Conceptual/SpotlightQuery/index.html