PHP Script code

[SeanH228]

This PHP script work exactly as it should sending the email to the appropriate email address defined in it and displaying the correct web page upon a successful submit. Right now if I go throught the process the email sent is from oceans@aimtree.org and it is sent to oceans@aimtree.org. I would like to know if someone can help me with resolving where the from is being pulled from. At the bottom of my form I have a required field for contact information in the form of an email address. I would like that field to somehow display that it is from that entry this way when the user oceans@aimtree.org receives the email they can know who it is from and reply back to it. I don't know what code is needed if any at all to make this happen. I hope this makes sense to all of you. Thanking you in advance
Here is the script

<?php
//--------------------------Set these paramaters--------------------------

// Subject of email sent to you.
$subject = 'Residential Repair Request';

// Your email address. This is where the form information will be sent.
$emailadd = 'oceans@aimtree.org';

// Where to redirect after form is processed.
$url = 'http://www.aimtree.org/pwthankyou.htm';

// Makes all fields required. If set to '1' no field can not be empty. If set to '0' any or all fields can be empty.
$req = '0';

// --------------------------Do not edit below this line--------------------------
$text = "Results from form:\n\n";
$space = ' ';
$line = '
';
foreach ($_POST as $key => $value)
{
if ($req == '1')
{
if ($value == '')
{echo "$key is empty";die;}
}
$j = strlen($key);
if ($j >= 20)
{echo "Name of form element $key cannot be longer than 20 characters";die;}
$j = 20 - $j;
for ($i = 1; $i <= $j; $i++)
{$space .= ' ';}
$value = str_replace('\n', "$line", $value);
$conc = "{$key}:$space{$value}$line";
$text .= $conc;
$space = ' ';
}
mail($emailadd, $subject, $text, 'From: '.$emailadd.'');
echo '<META HTTP-EQUIV=Refresh CONTENT="0; URL='.$url.'">';
?>