[Salik Syed]

I'm sorry about the overbandwith issue....my host sucks if too many people view an image then...it is unavailable.
To get it to look realistic i basically use 3 steps:
1. Attention to details...thats important...use high polygon stuff 18 sided cylinders=NO
(unless it is small) put details like grooves, bolts etc.
2. Lighting... use lights...correctly
3 MATERIALS !!!!! use raytraced materials on any reflective surface, keep an environment map that is high res and good quality.
Use procedurals they are better and take less memory too..
hope that helps

- Salik