Have splinter cell double agent were can you find free Shader 3.0 free

You cannot find free shaders 3.0 because it's not software. Shaders 3.0 is hardware option which allows you to make games more realistic. In order to use shaders 3.0 you have to purchase a video card with shaders 3.0 support. http://en.wikipedia.org/wiki/Shader_(realtime%2C_logical)