Question about Outlook Express

I constantly have to remove the Microsoft Database Daemon from my Login Items but it keeps coming back. I have locked the Login Options page in my Accounts -- and I'm the Administer for all of my Macs -- but still that darn "feature" keeps reappearing. It causes me extra work with my backup program since I need to remove it and then restart in order to synchronize 5 different Macs and I cannot do that if the Database Daemon is already running. I've tried to remember to remove it from the Login Items when I shut down each machine, but sometime I forget to remove it. It then causes me issues again the next time I start that computer up again.