Hi Harlen
You cannot change your email address through the forum website; you will need to change it in your MyTrainz account. You can do this by following these steps:
1) Go to http://www.auran.com/
2) Click on MyTrainz, and log in
3) Click on My Account on the left hand menu
4) Click on 'edit' next to your email address, and then follow the prompts.