One page order checkout: Hide first and last name in delivery address

[OksanaP]

Hello,

 

I would like to hide first name and last name from delivery address on one page checkout (https://drive.google.com/file/d/0B9D-IZmHyImGZExFN1l0SkJqZTQ/view?usp=sharing).

 

These fields are filled automatically when client types his first name and last name in New Customer.

Which php file need to change and how?

 

Thanks

[bellini13]

What if the customer is sending the order to a different person at a different address?