Simple php mail help

i used this on the acttual php form

<?php
mail("[email protected]", $subject, $message, “From:() $from
X-Mailer: PHP/” . phpversion());
?>

now, i modified it a tad bit because at first, it was showing me, my servers name and THEN the person who sent the email so i removed some stuff were

"from:()

IS and then it woked fine. now i made some minor non AS changes to my flash site and when i uploaded it, i go to make final tests, and now the

FROM field on my email is empty

so with this line, the subject and the body of the email comes out fine but not the addy from the person who sent it doesnt

n e help is app, TY