I see now. :)
This one helped me. I do not want to know anything special 
about YahooTravel. I just had an idea to go a bit through 
all of Yahoo services and see what is offered. Some are 
very useful, even for non-US citisens. So, you can imagine 
how much time it could take me to go from one help section 
to another, and particularly, from one part of help 
sections so another. But I thing this point of solving the 
problem (braking the topic into chunks) opened for me a new 
way of considering the problem. I wasn't thinking in this 
direction.
Thanks! :)