Require a Magento PDF Invoice Customization Extension like any of the below.
Require files only no install needed. Module must be certified bug free and working with 1.4.01
http://www.magentocommerce.com/magento-connect/eCommerce+Software+Solutions+Online/extension/4005/customized_pdf_invoice_extension
http://www.magentocommerce.com/magento-connect/cz_nikita/extension/3655/flex-pdf_print-outs_customizer
http://www.magentocommerce.com/magento-connect/Maison+du+Logiciel/extension/2503/smart-pdf
Please do not send me list of websites and auto introductions, we just need the extension.
