In order for you to play Airline Tycoon 2 on Windows with minimal graphics settings, your computer must meet the following requirements
OS *:
Windows XP / Vista / 7
Processor (CPU):
3 GHz Intel Pentium D / AMD Athlon 64 3000+
Memory (RAM):
1 GB
Video Card:
Nvidia Geforce 8600 GT / ATI Radeon X 1800
DirectX®:
9.0c
Sound:
DirectX-compatible