Hello Alchemy!

Most of actions with INSERT / UPDATE in UNA are done via Forms which work according data from `sys_object_forms`. So it would be hard to call "some code / function" to inserts data to all three tables. In common way you may call BxAccntFormAccount and its method insert(array(with fields and fields values)), then get account id, then call class BxDolProfile with its static method "add" etc. To proper work of similar constructions better to build full module for UNA. Or insert content to mentioned tables via MySQL only.

With the best regards, Leonid