I did this whole process: Click on Start –> Run
Type in “regedit” and then click OK (without the ” )

Navigate through the registry editor to:
HKEY_CURRENT_USERSoftwareMicrosoftMSNMessenger

Select the “Server” key, Right click, and select “Modify”

Change the value data to:
gateway.messenger.hotmail.com:80

then I try entering the IP address, and all I got was :

Signing in to .Net Messenger Service failed becuase the service could not be found. Please make sure that you are connected to the internet. 0x81000302