Windows live messenger

Hello,
I am currently using WLM 8.5 but i would REALLY appriciate it if i could get WLM 9 on my desktop because i would really like to be on msn at school and home at the same time.

The problem i have with WLM is that it wont sign me in, i have uninstalled WLM 8.5 and plus live! completly, restarted, deleted the program files, restarted, and run Ccleaner on the registry, restarted, and installed WLM 9, and restarted, and it still doesn't work. It runs the program but when i try to sign in, it works for about 10 seconds and reverts back to the sign in screen.

Any and all help is appreciated!