I'm not sure how MSN will decide which site you should be directed to for their services, but here's a few things that might affect it.
1. Langauage settings on your computer - are they English?
2. The location of either your ISP or your IP address.
3. The site you registered at. Have a look at
http://www.msn.com/worldwide.aspx see if it offers any clues to resolve this for you.
3. Pick a site as your 'home' that s one of the English sites.