need some help with the menuStrip!!

I need help with a few things I am a begginner so sorry in advance if this is dumb question

using the menuStrip i have made menu with like so:

File

Screen 1

Screen 2

Screen 3

Screen 4

Exit

for each "screen" i will use a different form

my first question:

I want to know how to select a different form so when say i select screen 2 my screen 2 form will appear (from another form which i created)

my second question

on the last part of my menu strip i have "exit" i want to know the code i have to write for it to exit the application .Also for it to include a confirmation request using a MessageBox with an appropriate action taken depending on the users response.

[780 byte] By [Rhetoric] at [2007-12-28]