Riot reccomends a DirectX 9.0 capable video card that supports Shader 2.0
Yes .
No Geforce 4's only support Pixel Shader 1.3 You need at least a Geforce FX 5 Series to use Pixel Shader 2.0
Yes, it supports upto Pixel Shader 3.0, so you can easily run Vista Ultimate Aero, and new games.
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.
I believe you need a Video card that will support pixel shader 2.0.
No, the Pixel Shader version describes the capability of your hardware. If you're getting that error from a game you will probably need to upgrade your video card. There is a way though to use software emulation but its best if you have the actual hardware that uses pixel shader.
Pixel shader is a technology included in many video cards which allows programs to render more realistic lighting in 3d visualizations. Many modern PC games require a certain amount of pixel-shader code within the video card. If you have such a game and it will not run due to a lack of a pixel shader, you will need to buy a new video card in order to play that game. In some circumstances, merely updating the drivers will suffice. However, it is much more likely that you will need a new video card. The number that follows pixel shading isn't a size, it is a version. Every version is backwards-compatible with all the previous versions, so the higher the better. Basically it breaks down like this. Pixel shader 1.1 = Supported by Geforce 3 and higher Pixel shader 1.3 = Geforce 4 and higher Pixel shader 1.4 = Radeon R200 & up Pixel shader 2.0 = Radeon R300 & up Pixel shader 2.0b = Radeon R420 and Geforce FX and up Pixel shader 3.0 = Radeon R520, Geforce 6 and 7 series Pixel shader 4.0 = Radeon R600, Geforce 8 and 9 series So if you had a geforce 7 series, you would be able to run any game which required pixel shader 1.1 thru 3.0 but not a game which required 4.0 Most of the modern games out there right now are requiring 3.0 at the most, it is not difficult to find a video card which has this for under $100.
Pixel shader technology is hard-coded into your video card and its drivers. While it is possible to emulate pixel shader using software like 3danalyze or swiftshader, doing so only shuffles the workload over to your CPU. Unless you have a hugely powerful system, emulating pixel shader will likely result in unacceptably low performance and/or system instability. Im afraid your best option is to simply replace your video card with one which has native support for pixel shader.
You need a new video card.
A Pixel Shader is not something that can be downloaded. It is a feature of the hardware on your video card. If your video card does not contain the hardware for this Pixel Shader, then you must purchase a new video card.
You can't, sorry. Pixel Shader isn't available in Geforce 4 MX, as it's entry level. You need to buy an AGP card like Geforce FX 5200 above, or 6200, or 6600.