screennames & windows messenger

From: adriannemarko (Adriannemarko_at_netscape.com)
Date: 04/28/04 

Date: Wed, 28 Apr 2004 15:01:16 -0700

I an new to using the windows xp. I don't know how to add an additional screenname so that my husband will have his own and i don't know how to be able to send an instant message to anyone. It says that the prople don't have .NET installed but they are unable to install. Please help me in any way possible.