Click on this link:
http://www.msn.com/
Assuming that you're in the UK (as you appear to be) you should be taken to the UK version of MSN. However you should also find an overlay on the page, where you can click on 'Always take me to MSN US'. Doing so will place an appropriate cookie onto your PC. (Remember though, that if you clear cookies from your computer you'll get the UK site again).
Chris



