>How to send the cursor to the first control on a form. I want to put this code in a class. Sometime ago I saw one thread here explaning how to do, but now I don't remember. Anybody could help me?

Antonio,

You set focus to a control by calling its SetFocus method. As to where and when you call that method, well that is involved in what class and what other objects and which method you are calling from etc..