nope
256 MB graphics card support pixel shader 3.0
It supports pixel shader 4.1
Yes, the Intel GMA 3100 supports up to Pixel Shader Model 2.0
According to Intel, Intel G33/G31 express chipset have pixel shader 2 but not 3.
Nowhere. Pixel Shader is a hardware feature that comes with your graphics card. Most graphics cards these days support pixel shader 3.0 or higher and are at a low price.
Yes. Shader 5.0
You cannot download Pixel Shader because your graphics card should already have and support it. If not, you will need a new graphics card which supports it.
pixel shader is a program that executes inside the graphics processing units (aka graphics card) so you wont be able to "find" it. :P However, if you're talking about pixel shader setting. It can be found in the pcsx2 settings, under graphics. remember, you will also need a graphics card that support pixel shader, or it will crash.
2.0
I believe your graphics card must support pixel shader 1.1 in order to play TF2.
a pixel shade support comes with a graphics card that should come with direct x 9
Minimum = Nvidia gefore 6600 series