Read the letter in full....
when you originally contacted the FAA you should have nominated the FAA office which you wish your Temp Airmans Cert to be issued by... you will now need to contact that office directly, contact details found on the FAA website, to make an appointment. You then show up to the appointment at which point they'll go through everything, check ALL your originall UK JAA PPL and subsequently issue you with a temporary airman cert to keep with your licence. When you return home a shiny plastic FAA PPL licence card will be on your mat. Makes the book format look rediculous!
Good luck
2W2R
