There is a number of way's to go about this, depending on how much money you want to spend, and if you want to do self study or classroom. Search the internet, and you will find several US schools who do these conversions. Try the search function here on PPRUNE. These subjects have been covered before.
Check out
http://www.dauntless-soft.com/PRODUC...undSchoolATPL/ for a excellent product and info.
There are 14 exams for the ATPL, but there are excemptions for pilots with heavy experience!! I would call a flightschool to clearify this, or ask here in PPRUNE. Normally european pilots get a so called frozen ATPL on their CPL, meaning that they have taken the ATPL written, but not the ATPL flight test. In Europe you only need a CPL + frozen ATPL to fly for the airlines. You would then get your ATPL when you upgrade.
Good luck! Sympathy from Empati!
