action file name of a form

[Toni]

hi,
I have created two files.

The first one contains a form, and is called "Formularis". The second one (the one that is supposed to be the action file of the form) contains some php code using user-defined tags and is called "mail".

My question is.. what name do I have to type in the action attribute? mail? mail.php? and where is that file? ../mail.php ./mail.php.

thanks a lot