I need somebody help me.

1) I must validate a text object when the user doesn't input any answer in a text box.

2. I need tu validate a text object as small letter(minúsculas) as big letter (mayúsculas)

3.Validate the text box for only one letter

4. Reconiza the TAB key and select any button or go to any text box. Move through of all objects.

I NEED URGENT

contact to me: any_lu2002mm@yahoo.com or any_lu2000@hotmail.com