I have a couple of Hotmail a/cs, and set up my XP Home PC for different users. I can access one Hotmail a/c on my XP log-on, but usually can log into both Hotmails on my Guest XP log-on.
Any connection is very slow however, and usually get the "This page cannot be displayed" shown. Bizarly, I can sometimes get into Hotmail by going to another page and then pressing the back button and refreshing the screen.