Sign in question for Windows Messenger

[Thelma]

I am running Windows and MSN messenger and will use them on occasion at the
same time. I have noticed that MSN will open and give me the option to sign
in with my default passport or sign in with another name. When I open
Windows messenger...it will automatically sign in with my default. I know I
can choose to change my default. My question is......Is there a way to
start up Windows messenger and not have it immediately sign in with my
default....I would like to have the same option as MSN that allows me to
click the 'sign in' tab. I have all the auto sign in options unchecked.

Thank you for any help passed my way.