Maybe you could help us out a bit by giving us more info. Please think about this - We can't see ANYTHING from here.
Is it a center stair? Do you want a landing? Is it along a wall? Is it a spiral stair? Is it a deck stair? Are you having it pre-made? Are you using iron or wood for balusters and handrails? Would you like measurements in Standard or Metric, or do you just have a preference for one over the other?