FAA hoops
Hi,
On the paperwork front you need to fill in a bunch of forms and send them to oklahoma they will then contact the JAA state to confirm your id before you are issued any licences. If this is the UK then you need to first send money and paperwork to the CAA to permit them to divulge your info to the FAA (data protection act)
I did this last year and it was no problem. I did have to go to a branch FSDO (flight standards district office) though so I'm not sure if you will have to do that or there is a better way around it.
Mark.