register_globals off issues

I'm very new to PHP/mySQL and am working through the "PHP and mySQL for Dummies" examples. Unfortunately, these were all written with register_globals on and the system I'm using has register_globals off. I'm having trouble converting the examples to use the $_POST() expression. Specifically, the examples use a POST with a form variable to run a query and then unset this variable as such: if (@$form == "yes") { unset($form); } I'm trying to convert this to use $_POST() as such: if (@$_POST['form'] == "yes") { unset($_POST['form']); } However, this does not work. It appears that you can't unset the $_POST['form'] array element. Does anyone have any suggestions on how to fix this? I know I'm probably missing a few very obvious things here... but I am a newbie. /Mark -- Mark H. Spohr email: mspohr@nnk.com