I would really recommend signing up for AIM as it is the best IM imo and more people use this instead of MSN. Second, I would reconmend downloading an IP hider such as "Hide MY IP".
Link: http://www.hide-my-ip.com/
It lasts for 3 days, but you can just download it again off a different website to keep using it. I would also recommend the Platinum Edition also.
-spartan447