Don't want to sound rude or anything, but try searching more with the search option on this forum.. Especially look for Drew medina and ventilator, or matt auf der heide and ello's posts, or any other shaderking i forgot to mention, out there, you will find tons of information about shaders (and quite some code examples too)!! Also note that some of the codes are old DirectX 8 shaders, which will have to be slightly altered to work with DirectX 9 ---> Consult the Wikipage and also maybe google for information on shaders, that'll get you started!!
Cheers
