To update your drivers for Shader Model 3.0 support, you should visit the official website of your graphics hardware manufacturer. Shader Model 3.0 is a hardware-bound feature of DirectX 9; while drivers can ensure compatibility, a physical GPU that supports it is required. Driver Update Links
If you receive a "Shader Model 3.0 required" error, you can find the latest drivers at these locations: GeForce Driver Downloads AMD: AMD Support & Drivers Intel: Intel Download Center Documentation & Technical Details shader model 3 skachat draiver
NVIDIA's Shader Model 3.0, Best Practices provides a deep dive into GPU/CPU bounds and hardware features like instancing and shadow maps. To update your drivers for Shader Model 3