Hi Bill,
Few things to check out:
Run TrainzDiag,exe - Its in the Auran TS2009 folders somewhere. See if this gives any errors (this should have run during the install).
Run DXdiag.exe and check for errors.
Make sure the drivers for your video card are up to date (and the correct ones for Win 7).
Have you installed and tried to run Trainz as "Administrator" or whatever W7 calls it? You will need to do this for it to run.
Cheers