This document is only if you want to upgrade from 1.6 to 1.7... 

1. BACKUP YOUR DATABASE... the process will change the database and if something go wrong... :-)
2. In your browser, execute the dbupgrade.php script (located in this directory)
	This php script will fix the internal document attachement system and replace linked
	MD5 reference by the docid
3. That's all!
