Msgbox text properties & Spacing

I have the following code

NInoget:

Message1 = "Please input the National Insurance Number"
Title = "NATIONAL INSURANCE NUMBER"
NINO = InputBox(Message1, Title, Default)

Message2 = "The NI no you have entered is: " & NINO & " Please confirm this is correct before continuing"
rep = MsgBox(Message2, vbYesNoCancel, "NI No")
    If rep = vbYes Then GoTo continue
    If rep = vbNo Then GoTo NInoget
    If rep = vbCancel Then End: MsgBox ("Operation cancelled")

I would like to make BOLD "part" of the message in a message box. The part is NINO in message2. Any iudeas how to do this?

Additonally, the part " Please confirm this is correct before continuing" I would like on a new line.

thanks