[Wikitech-l] Case-insensitive article titles

I was wondering if there's a feature in MediaWiki which allows for article titles to be case-insensitive. We have a problem right now where a user creates an article for, say, RFID. Another user will spell it Rfid instead and we end up with duplicate articles.

I was hoping there would be a switch somewhere that can enable this feature. So far I have not found any such setting. We're running the following versions:

MediaWiki (http://wikipedia.sf.net/): 1.3.3 PHP (http://www.php.net/): 4.1.2 (apache) MySQL (http://www.mysql.com/): 3.23.49-log

I noticed wikipedia.org has article titles which are case-insensitive, so I wonder if this capability is buried deep in the configuration.

Thanks, Randy