vertex and pixel shaders

hi,
I was wondering if anyone could point me towards a good place to start learning abt vertex and pixel shaders …using opengl if possible…
thanx,
quent

Vertex and pixel shaders do not exist in OpenGL. They are vertex and fragment programs, and they are supported via extensions. That is, you need a recent graphics card with recent drivers to play with them.

Start digging here: http://developer.nvidia.com/ http://www.ati.com/developer/index.html