Once again thank you for replying. Ive been practicing arthimetics and I am starting to be really quick in 2 digits times 2 digits hehe! May be a bit exagerated but you know nothing will take away my ilusion of beeing an ATC. When you say aviation knowledge will not help in eurocontrol? Maybe beeing an ATC in Vatsim could help??? Never thought about NATS because Its like for only british people and would be pretty strange for pilots to here espanish accent in uk airspace ha ha!