This is the RealFlight Add-Ons CD Volume 5 from Great Planes.

Add-Ons Volume 5 is ONLY compatible with RealFlight G2 and Lite! It
is NOT COMPATIBLE with the RealFlight Classic, RealFlight
Deluxe, or RealFlight NexSTAR versions.
11 New Airplanes:
Double Whammy, Bob Violett KingCat, Great Planes Shoestring,
Great Planes Tiger Moth, Great Planes Gee Bee, Great Planes
Lancair, Great Planes Viper, Top Flite T-34, Top Flite Sea
Fury, Top Flite Contender, The Osprey (a Tilt-Rotor Aircraft)
2 New Helicopters:
H-60 Jayhawk, MD500E
3 New Flying Fields
Blimp Hangar, Baseball Diamond, Mountain Pass

One RealFlight Add-Ons Volume #5 CD Disc
COMPUTER SYSTEM

All Add Ons volumes require that the RealFlight R/C simulator
(Generation 2 or Lite) be installed first.
Operating System: Add Ons Volume 5 is compatible with the following
versions of Windows: Windows 98 (first edition)
Windows 98 (second edition), Windows Me,
Windows 2000, Windows 2000 Pro, Windows XP (home edition),
and Windows XP Pro. Add Ons Volume 5 is not supported
under Windows NT or Windows 95
Processor: Minimum processor speed of 500Mhz with a STRONG
RECOMMENDATION of 1.2GHz or faster for best
performance
Memory: Minimum of 64MB RAM
Video Card: 3D accelerated video card with minimum of 16MB
dedicated video RAM. STRONG RECOMMENDATION of 32MB
dedicated video RAM (or more) for best performance.
Storage: 300MB Hard drive space
ats 9/29/03
this information was sourced from Great Planes Model Distributors