Quick Code Mod required for Wordpress plugin

The plugin that I want to use called CForms is a contact form submission plugin that offers CC feature when submitting the form contents. I would like to add a bcc feature to this plugin, but I can't figure out how to change the code.
Here is the assistance that I received so far...any help would be greatly appreciated:

Generally, you can quite easily go into the code and add a BCC field to the email header (in case you choose not to use the built in CC-option):

look for the below statement (lines ~468 & 910, 931):

$headers.= "Reply-To: " . $field_email . $eol;
and add a
$headers.= "BCC: " . $field_email . $eol;
and/or change $field_email to whatever specific email address you want.

Would I insert the bcc email addresses like:

"BCC: " . $joesmith@hotmail.com . $eol;BCC: " . $janesmith@hotmail.com . $eol;...etc???

 

Actually, you do it like this:

$headers .= "BCC: , ".$eol;