How to Find Login Items on your Mac OS X
In version 10.2.8 or earlier, you must log in as the user whose login items you want to modify. In later versions, you can log in as the user or as an admin.
To change your Login Items:
Click the Apple symbol in the top right corner of your screen. Alternatively you can open Finder, go to Applications, then Utilities and double-click on “System Preferences."
Once in System Preferences:
For version 10.2.8 or earlier, click “Login Items" on the View menu.
For version 10.3.x or later:
Click on “Accounts" in the System section of the box and click the login account on the left that you want to modify the login items for. If the account is grayed out, it means that you do not have sufficient permissions to modify the login items for that user.
Click the “Login Items" tab (“Startup Items" in version 10.3.x). This will bring up a list of login items associated with the account selected on the left.
Click the “Add" or ~ez_ldquo+ez_rdquo~ button to add a login item to the list. Find the item to add in the browse box that appears and click “Add."
If you want to delete a login item, highlight it and click the “–“ button.
For login items you want to start on login but do not want the window to stay open, put a check in the box to the left of the item in the list under the Hide column.