Hi, thanks for trying Librarian. I don't deny; it's not as easy to install as other software. You can always write me (or to this forum) with your 'minor problems. You can also subscribe into the Librarian mailing list. As to your question. It is possible to alter categories. Unfortunetly, I did not write any administration pages yet. So you'll have to do that either by clicking 'Edit' on every article you want to change, or by much quicker way. Via SQL commands. You have to start Command Prompt and go to mysql/bin directory. Login to your database, e.g. mysql -uusername -p databasename Than type for instance: UPDATE library SET category='newcategory' WHERE category='oldcategory'; martin