PS. edit your post (press the "quick edit" button), and remove your email address. You don't need spam.
PPS. what version of MSN, and operating system do you use? Some old versions (like "5.x.x" or something like that) couldn't be uninstalled from Windows XP in the usual way, because they worked as a Windows system component.
But if you use the more recent "Windows Live" versions, uninstall shouldn't be a problem.