you could put a shortcut to the msn6 executable in the startup folder of your start menu (assuming it's not already there). or if you're using a scriptable shell manager (such as the excellent shellon v3 [http://www.dx13.co.uk/sov3/]), you can set it to launch msn6 if litestep is loaded as the shell. see your shell manager documentation for more info. in shellon v3, the script would look something like this:

incidentally, trillian really is a great instant messaging app. i currently have 9 nicknames signed on to four services (2 on msn).