Trainz Driver is a cut down demo version of TRS2006, sold at a lower price. It doesn't include Surveyor or any means to create or install additional content. If you already have TRS2004, TRS2006 or Trainz Classics/Trainz Railwayz/Trainz Railways, then Trainz Driver will offer you nothing.
As I understand it, you want to drive between railway stations within the same city, for example running commuter services. Let us know if that's correct and maybe somebody can suggest an appropriate layout that you could try.
John