Ok, I've looked at your page.
What you want is to upload the file from the user's PC to your website and then email to you.
My code takes a file on the webhost and emails to an email address given by the user.
So... you need to get the upload happening. Simple examples abound. Then email it.
If you are using my attachment code then it should work ok. There is a strict order with html emails as to the order which they are built, so follow my example exactly. Don't reorder!
here's my code and I'll attach the class that I got from somewhere...
include("cl_upload.php");
$thisName = $_FILES['image']['name'];
$u = new MyUpload( $thisName, $_FILES['image']['tmp_name'], $_FILES['image']['size'], "thisname" );
$u->cls_verbal = 1;
$feedback = $u->upload( "uploads/" );