In order for you to play Mosby's Confederacy on Windows with minimal graphics settings, your computer must meet the following requirements
Operating system:
Windows® XP or Vista
Processor:
1.8 GHz processor or higher
Memory:
512 MB RAM Windows XP® (1 GB for Windows® Vista)
Hard disk space:
350 MB uncompressed free hard drive space
Video:
64 MB DirectX 8.1 compatible card