Hey. Thanks for all your help.
I dont have any experience with this tiny lithium con cells, so i hink that you must be right!
Anyway, this project is supposed to beep in the classes of a teacher (she is really rude, and everybody hates her!!!) I ehink I saw another post on a similar project, but i cant seem to fin it. If you know the addres, can you post it please???
Thanks again, and sorry for my english!!!
Manuel