To Save you trawling through all the threads. Here's the forms you need
http://www.caa.co.uk/docs/33/FORSRG1160.PDF
http://www.caa.co.uk/docs/33/FORSRG1187.pdf
http://www.faa.gov/licenses_certific...erify61-75.pdf
They claim it takes 6 weeks to do. But I managed to get mine done in 2 weeks, but I had to beg the CAA to do it for me. The slowness is in the CAA! Suprised?!
The day I faxed over my forms to the FAA I called them to check they had them, I was fortunate to speak to nice lady and managed to get her to send the request off to the CAA for the info/confirmation while I was on the phone!, she told me as soon as the CAA replied she would call me and let me know when I could go to the FISDO office in the USA to pick it up.. Well the CAA took 10 days to process and return the form, and charged £35 for the luxury!
Good luck... Print the forms off tonight and get them sent off ASAP. You may stand a chance of getting it in a reasonable time..