Sometimes you may need to add additional mailboxes to your Outlook 2007 client beyond just your own. First, you have to be given security rights to access the mailbox, but that is outside the scope of this post.
The simplest way to do this is to use the File menu and open another user’s folder. This keeps on giving me errors, however, so the approach detailed below is the way I end up doing things.
First, go to to the Tools menu, and select the Account Settings… option:
Next, select your existing account in the Email tab and click on the Change… button:
Click the More Settings… button:
Select the Advanced tab and click on the Add… button to add another account to Outlook:
Enter the mailbox name and click OK:
The new mailbox should now be appearing in Outlooks list of folders: