Hi Billozz
Welcome to you, surely all you have to do is, use an editing programme, there are free one obtainable on the net, If you have the photo, (I assume it's the one you posted) then edit the size and tweak the resolution and if you have the printer for the job print it out.
If you do not have a printer capable of printing the size you need there are companies that will print it out for you, depending on how many copies you need it shouldn't cost all that much,