Name validation help!

Question

hello guys, i have a textbox in a form called form1 where the user is to fill his/her name, i need to do some validation to the textbox so that the user inputs only alphabetical letters, i also need to display the user inputs to another form where i have a multiline textbox can some one show me how to do this.thanks

Ps. if you put some code here can you please put it in a way so that i will now which is for which .so i will learn bit by bit.thanks