Yes, the GeForce 4 series was the first to feature pixel shading. After that there were vast improvements and now the GTX 200 series fully supports DirectX 10 and Pixel Shader 4.0.
For simplicity's sake, I am assuming you are describing a laptop video card. As far as I know there is no desktop video card with that model number.
i have run games like Call of Duty 2, splinter cell chaos theory, medal of honour etc with ATI 9200SE 128Mb
no
Yes, Media Accelerator 950 supports Shader 3.0 model.
nope
Most modern laptop graphic cards support vertex shaders, including the onboard ones. An example is the Intel Graphics Media Accelerator 950 which supports vertex shader Model 3.0.
It has a motherboard-integrated graphics chipset by Intel: Intel Graphics Media Accelerator 4500MHD
ATI Radeon HD 4250 is a better graphics accelerator than Intel's
One can find more information on Intel Graphics Media Accelerator 3150 from the following sources: Intel, Intel Download Centre, Intel Communities, Toms Hardware, Notebook Check.
The Dell XPS m140 features the Intel Graphics Media Accelerator 900. The Intel Graphics Media Accelerator is a modest onboard graphics chip suitable for everyday tasks.
It supports pixel shader 4.1
Yes, the Intel GMA 3100 supports up to Pixel Shader Model 2.0
igfxtray.exe beglongs Intel(R) Graphics Accelerator Helper. And it is a process which allows you to access the Intel Graphics configuration and diagnostic application for the Intel 810 series graphics chipset.
According to Intel, Intel G33/G31 express chipset have pixel shader 2 but not 3.