Modifying register.php to collect additional information

[mr. bowes]

New to this forum and to php/vBulletin. Thanks in advance for any replies and discussion.

I need to modify the registration process to enable three data points to be tracked at the user level.

For example,

User 1 registers, selects from three drop-downs: favorite pet=dog, favorite food=pizza, and favorite movie=tombstone.

After registration, this information should be maintainable by the user in edit profile.

I did some searches but could not find a plugin that allowed you to edit the registration process. My next thought was to just edit the register.php and profile.php to enable these changes. Is this the best idea for making the change? Please let me know if I'm overlooking something.

From looking at the code, it seems that I should add the logic to the following:
// ############################### start add member
if ($_POST['do'] == 'addmember')

And I assume profile.php would handle the maintaining portion.

Any instructions on how to best implement this solution would be very much appreciated!