These are the general system requirements for Dragon's Guise. It might be possible to run the application on lesser hardware but this is a good baseline.
The game is quite demanding so it is recommended to use a CPU with a fast FPU like the Pentium 2 or above. A solid graphics card like the Voodoo 2 or better is also recommended.
Direct3D mode is generally a better option if your system has more limited memory or weaker hardware in general.
General Requirements
Operating System: Windows 95 OSR2 and up
CPU: Pentium
GPU: 3D accelerator with 4MB video memory and full OpenGL ICD support, Direct3D support, or a Voodoo graphics
Memory: 64MB
Display: 640x480 minimum, smaller resolutions have scaling applied
Other: Keyboard and two-button mouse