Since some people don't know how to line break, here's your answer.
msgbox "Prompt" & vbCrlF & "Another line's prompt", vBInformation, "Title"
If you want more than one line break:
msgbox "Prompt" & vbCrlF & vbCrlF & "Two lines down from prompt", vBInformation, "Title"
Because I googled to see if any other sites knew, and this site had one, but someone was asking the question.
Anyways, peace.
If this was already posted, don't flame because I just registered here like 5 minutes ago.
-Meatwad