how to hide too many options..

..for the author..?

I'm setting up some cms-ish configuration, and would like to hide some admin-field that the authors don't really need to see all the time as a first thing: the "authoring info" (name and timestamp) and the "publishing options".

I tried to find the code (must be where the class="authored" is generated) where I could just comment-out thoses lines for the authors with some similar bit of code:

<?PHP

if (in_array("Author",$user->roles)) {
$not_admin = "not_admin";
echo("Hello Author !");
} else {

//

}
?>

..or how could i hide these without turning the user-module and the node-acces off..?

..anybody..? ..thank you!

till.