Running multiple copies of same Instant Messangers is quite interesting & many a time useful too. Windows Live Messenger 8.5 Plus! Live also provide you one such facility. Messenger Plus! Live does more than just allowing multiple copies of Windows Live Messenger, functions like protect preference with password, application transparency, personalized status and much more are also included.
Open Multiple Copies of Windows Live Messengers
[1] Download and install Messenger Plus! Live
[2] Launch Preference settings
[3] Choose Messenger tab, on Main check on Allow me to connect to several accounts simultaneously
[4] Done, double click the icon again to launch another copy of the live messenger







What do you mean by 'Launch Preference settings '?
Simply ,Go to Preferences in the Windows Live Messenger 8.5 & do as stated in the post.