simple checkbox form array help!

Hey everyone, just need a little help here. First time really getting into PHP, and I'm trying to make a simple form. One part of the form is a set of checkboxes. The name of the field is called "services" and options are thus:
Monitored
Network
License Management
Backup Server
Backup Agent

My html code looks like this:

<form  method="post" action="billingadjustment.php">
        Services:<br>
        <input type="checkbox" name="services[]" value="Monitored">
        Monitored <br>
        <input type="checkbox" name="services[]" value="Network" >
        Network<br>
        <input type="checkbox" name="services[]" value="License Management" >
        License Management <br>
        <input type="checkbox" name="services[]" value="Backup Server">
        Backup Server <br>
        <input type="checkbox" name="services[]" value="Backup Agent">
        Backup Agent <br>

The php code looks like this:

<?php
if (isset($_POST['submit'])) {
    $to = "myemailaddress@domain.com";
    $subject = "Billing Adjustment Request";
    $requestor = $_POST['requestor'];

    foreach($_POST['services'] as $servicesbox) {
        $services .= "Services: $servicesbox\n";
        }

        $body = "From: $requestor\n $services";

        mail($to, $subject, $body);
        header( "Location: http://www.mydomain.com/redirect.html");
        } else {
            echo "blarg!";
            }
            ?>

I was just using some code I got out of a book, and it seems to work but just a couple problems. It gets sent to my email address, and the ouput for the checkboxes looks like this:

ArrayServices: Monitored
Services: Network
Services: License Management

Question 1: How do I get it to not put the word "array" in front of the first option.

Question 2: I would like it to just output the word "Services" once, then maybe put all the options that were chosen after it, maybe separated with commas or something. I know that probably has to do with the "foreach" command I'm using, but I don't know how to fix it.

So I guess I want it to come out looking something like this:

Services: Monitored, Network, License Management

Any help?
Thanks in advance!

EDIT: Nevermind guys! I should have just thought about it a bit before I asked you all. I changed this bit of code:

<?php
               $to = "myemailaddress@domain.com";
    $subject = "Billing Adjustment Request";
    $requestor = $_POST['requestor'];

    foreach($_POST['services'] as $servicesbox) {
        $services .= "Services: $servicesbox\n";
        }?>

I added a variable called services, and did this:

$to = "natepacker@gmail.com";
    $subject = "Billing Adjustment Request";
    $requestor = $_POST['requestor'];
    $services = "Services: ";

    foreach($_POST['services'] as $servicesbox) {
        $services .= "$servicesbox, ";
        }?>

Works just the way I want it to now! Only, I still don't get why it was putting the word "Array" in front of it before.
Thanks!