I have sucessfully attained surface rendering of certain 3D data. Now I want to do volumetric rendering of the same (voxel rendering). Can somebody plz help me with this by suggesting some links or providing some sample code.
This comes up fairly often on this list, so you should probably comb through some old threads. Among others, one sample that is available is the RadeonVolViz sample from ATI.
Sorry to sound glib, but have you tried Google? There really are a lot of web pages out there, many with decent descriptions of the various algorithms.