How do I sign into 2 msn accounts? Without using the old1?

Do you already have two accounts? What specifically with MSN is this for?

If it's for IMing between the two, and I won't ask any questions why. Download it's IM application, not the website but an application on your computer. I'm not sure but if you can IM using the website you can IM between the application and the website. I did it for a joke once on AIM (AOL Instant Messenger), I made my friend think that I was telling his girlfirend embarrassing things.