Complex sentence: FDCC applied only to Windows XP and Vista desktop and laptop computers and was replaced by the United States Government Configuration Baseline (USGCB), which included settings for Windows 7 and Red Hat Enterprise Linux 5.
Split into simpler sentences: FDCC applied only to Windows XP and Vista desktop and laptop computers. FDCC was replaced by the United States Government Configuration Baseline (USGCB), which also includes settings for Windows 7 and Red Hat Enterprise Linux 5.