Multi Print when Updated Status to PRINTED for CRE Loaded

I need an update to my oscommerce CRE Loaded modified [login to view URL] script On the admin/[login to view URL] page - I presently have checkboxes next to each order, I can check the box (or boxes or a button that checks all boxes) and change the status(es) to PRINTED. What I need is - when I change the status to PRINTED I want the Packing Slip & Invoice to be printed (which presently is one php file with both pages on it). This means I'll be able to check multiple boxes and have them printed. More info: How I will use it, I will see I have orders, then I select the status of "Processed", this will bring up the orders page with only the "Processed" orders, then I will check all of the check boxes and change the statuses of all of these orders to "PRINTED" - then a window will open with the invoices and packing slips and I will click the print icon and print the orders invoices & packing slips. I presently have all of what I just mentioned except the ability to print when the status is changed - I have to print them one at a time. I am attaching the two files [login to view URL] and [login to view URL] Let me know if you need more info or files. I will install the files and update any other files, just send me the instructions