hi there

i´m working on a model that is an ice stadium which is filled with tons of sand for the summer to become some sort of bazaar/beach party area. i haven' worked a lot with maya and this is my first time texturing. i have made a texture with photoshop and projected it on the surface. then i made another file filled simply with "noise" for bumpmapping. but as you can see below, the result is not satisfying. i'd rather like to have it look like here: https://www.3du.de/maya2.htm
i suppose it does not look that "grainy" cause the bump map
is kinda "stretched" over the whole surface. now how can i achieve a likewise result. or is there even a better way to make a surface look sandy(i'm using maya 6)?can it all be done with particles?my pc is quite old.
btw:bumpmapping is only shown using hardware rendering,
isn't it?on the picture,the lower part is without, the upper part with bumpmapping.