Hi all

I have just installed and generated my first page with define page generator. Now when I want to edit any of my define pages I get the following error:

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /home/orderpco/public_html/shop/includes/functions/functions_email.php:1191) in /home/orderpco/public_html/shop/includes/functions/sessions.php on line 108

Warning: Cannot modify header information - headers already sent by (output started at /home/orderpco/public_html/shop/includes/functions/functions_email.php:1191) in /home/orderpco/public_html/shop/admin/includes/init_includes/init_templates.php on line 36

Warning: Cannot modify header information - headers already sent by (output started at /home/orderpco/public_html/shop/includes/functions/functions_email.php:1191) in /home/orderpco/public_html/shop/admin/includes/functions/general.php on line 21

I also cannot seem to find out how to have a header menu (below the logo going accross the page).

Here is the site:
http://orderpconline.com/shop/

Can anyone help?