The fax component can be setup during the Windows installation or at a later time from the Install Add/Remove Programs applet in the Control Panel. Select the Windows Setup tab and check the Microsoft Fax box.
Installing Microsoft Outlook 98 after the Microsoft Fax service has been installed will disable the fax service. The Fax printer still appears in the list of installed printers, but the Fax applet in the Control Panel has been removed. You can still print to the Fax printer from within your application but no fax will actually be sent.