Problem MSN Messenger?

hey,
've tried for years to live msn messenger but since a parr days, I can not log on because "Your Hosts contains MSN-related entries, with the Namensaufklösung can come into conflict."
've Already uninstalled and reinstalled and even a new account erichtet but it helps nothing, I can only messenger on the web log …

1st What is a host?
2nd how can I change this?
3rd What the hell does that mean all? ^ ^

PLEASE help me!

thank you

1st The hosts file is located in the folder C: / Windows/System32/drivers/etc. The existing in this file records are there to host a fixed IP address assigned. It is only the hosts file is checked before the DNS server's IP address is asked.

2nd It may be that this file contains erroneous entries, so they just go with a text editor. Writing before the first entry and a # save the file. Check whether you can re-subscribe. If not so, then remove the # before the first entry and set a pre d