Please check the General Settings for the SCS Email for location specific settings.
To see your network folders, you may need to subscribe to them. Do do this in Outlook, right-click your SCS email account in the left pane, and select IMAP Folders.
Outlook has a proprietary file format that converts all attachments to winmail.dat. For email receipients who do not use Outlook, you can disable Outlook's formatting, including the proprietary attachments: