Saving Data in an external database

[dreded]

First post so go easy on me...

 

I'm very new to prestashop as well.

 

I want to integrate prestashop with an external application. The "customers" will be maintained though prestashop.

 

I don't need to change anything in relation to prestashop, but I would like to synchronize the customer database maintained by prestashop with an external database.

 

So the operations like

• registrations
  
• updating addresses
  

that are local to prestashop, would be followed by a one line ajax call to the external application.

 

All I would really like to know is where are the calls in the PS files, so that I can place my calls immediately after.

 

I have started looking in the authController, but I haven't managed to locate it just yet.

 

Is that the file I should be looking into?

 

I'm using PS 1.5