In order for you to play Vegas: Make It Big on Windows with minimal graphics settings, your computer must meet the following requirements
Minimum:
Pentium® III 600MHz, Windows® 98, 16MB 3D graphics card, 192MB of RAM. 500MB of free hard disc space. DirectX® 9.0, mouse, keyboard.
Recommended:
Pentium® III 800MHz, 32MB 3D graphics card, 256MB of RAM, 8x CD drive speed, mouse with wheel.