Had to share this with you - a bit of a conversation between my 8 year old sister and I on MSN (don't worry, she's only got me, my brother and one cousin on there and she doesn't know the password, only I do):
M says: the computer won't let us talk so much longer :(
M says: because the bar is getting really small
AKA says: the bar? what bar?
M says: the little bar on the side
(*moments later it clicks*) AKA says: ohhhh no! Baby that has nothing to do with how long you can talk!
AKA says: It's called a "scroll bar". See the little triangles at the top and bottom of the bar?
M says: ya
AKA says: if you click on it the screen will go up and it will show you what we've written to each other so far