8511781 - FX Reference Guide
8511854 - Gateway Starter Guide for Windows Vista
8511858 - FX-Series Hardware Reference Guide (for Windows Vista)
8511859 - FX Setup Guide
8512162 - Gateway Computer Reference Guide (for Gateway FX-Series computers with Windows Vista)
8512279 - Gateway Computer Reference Guide (for Gateway FX-Series computers with Windows XP)
8512280 - Gateway Computer Reference Guide (for Gateway FX-Series computers with Windows Vista)

Gateway provides some documents in PDF format.
For more information, see Using Adobe PDF Documents.