Changing Create Account Form

[jballotti]

I need to change the Account Creation form by adding Company Address and Phone information to the form. I've already figured out that I'll need to modify the ..includes\templates\template_default\templates\tpl_modules_create_account.php file. Can anyone tell me what other files will need to be modified? Also, will I need to add additional fields to existing database tables? If so, which table will these fields need to be added to.

Through experimentation, I've been able to prove that ..includes\templates\template_default\templates\tpl_modules_create_account.php is indeed the file to modify to add information to the Create Account form. I've been successfully able to add text to the form.

It has also become obvious that in order to support adding additional fields to this form additional field need to be added to the Address Book table in the database. Fields will also probably need to be added to the Customers table as well.
Could someone verify this for me and let me know if any other tables need to be modified to support additional fields for Customer registration.

Also, I need to know what other files need to be modified to support additional fields in the registration form.

Thanks