Hi I am currently working on an opensource project using crystalspace and am trying to make a water shader for it. The engine only supports cg shaders however and I have never used them. I did a google search and came up with almost all opengl stuff. does anyone know were i can find a tutorial or something along those lines for cg water shaders?

I don't use Cg either, but this might help:

http://developer.download.nvidia.com/shaderlibrary/webpages/cgfx_shaders.html#Ocean

It depends on how realistic and nice it would be... You can use some fake cubemap reflection or make realistic water using camera reverse.

http://www.bonzaisoftware.com/water_tut.html

This is nice tutorial which learned me how to make cool water... :)