mattpilot is right what concerns the logging of flight time. Whenever you are the manipulator of the controls of an aircraft (and are legal to do so) you can write it in your logboog and count it as flight experience. But at the same token, this time may not be able to be counted towards certain national CAA requirements for licence converting etc.
Cece,
it's not so easy anymore to get a FAA licence bsed on a foreign licence. Look up the post from "Naples Air Center" at the top of the "Private Flying" Forum
sp