I hope Im in the right forum area

Hi

I am new to PHP and ZenCart

Can u tell me what lines are modified for login from an external UI into Zencart

I have developed a browser free flash UI that I want to link to the ZenCart database. So when the user clicks on the link it logs him in I know the path to the header files are here:

\includes\modules\pages\login

but what lines do I modify to allow external login (if of course the user is registered)

any help would be great