Where is the registration database insert?

[AmazingRibs]

I want to add a subscription payment credit card form directly on the registration page instead of shooting the user to pay after registering. Where is the file that inserts the user in the database? I'd like to pull that code and place in a custom registration file of my own.

[Dead Eddie]

On the backend, looks like the classes you go through are:

vB5_Frontend_Controller_Registration
vB_Api_User
vB_DataManager_User

[AmazingRibs]

OMG thank you so much, was able to do exactly what I needed to!