How to Edit the Invoice.php file

[Guest]

Hi, I want to edit my invoice page so I can print it off and give/send to customers.

 

At the moment, it is show the payment details then loads of n's and does this again in the products purchased list, How can I get rid of these n's?

 

Also i want to add information to the footer i.e. microsoft MCP and my VAT number.

 

Any helps will be appreciated.