The spoofer probably just put your connection through a proxy. To change it back, start up Internet Explorer, go to Tools >> Internet Options... >> Connections (tab) >> LAN Settings... >> check "Automatically detect settings..." and uncheck "Use a proxy server for your LAN ..."
This should completely disable proxy connections through IE (and probably MSN as it uses a lot of IE's settings).
I hope this is all that spoofer did... My best advice to you is never use another one.
Happiness is not about being perfect.
It is about seeing beyond the imperfections.