Jerry, Click on My Trainz at the top of this page and log into your account.
Once in your own account click onto GET TANE PATCH INFORMATION again at the top of that page.
Read all the instructions on the next page carefully, patients is required while patching T:ANE as it must be allowed to rebuild the database before being run.
Point of interest, I rebuilt a computer the other week but instead of installing T:ANE and patching from a previous download, I just downloaded and installed the online installer from my own account and it did everything for me and saved all the fiddling. Peter