The document is an introduction letter for a new customer of the NOD32 Antivirus System. It summarizes that NOD32 has the best virus detection, fastest scanning speeds, and a small system footprint. It explains that default installation settings are recommended and will optimize the system for the user's computer. It also provides information on getting help, manuals, support, automatic updates and upgrades through the NOD32 Control Center. It concludes by thanking the customer for their purchase and welcoming feedback.