Please check the version of MSN Explorer on the computer. You can get the version number by clicking "Help & Settings" then on "About MSN". If it is not 10.20, uninstall/reinstall through the following:
How to uninstall MSN Explorer: http://answers.msn.com/solution.aspx?solutionid=115dc6c5-4ae7-4e38-8e0b-3eac07d020fa
How to install MSN Explorer: http://answers.msn.com/solution.aspx?solutionid=03fe3670-ac35-4523-834a-b6835219beb0
If you already have the latest version, which is 10.20, follow the steps to rename SDF:
http://answers.msn.com/thread.aspx?threadid=942abfe7-577a-4fa0-8eef-a7d88a7e5677
Do not hesitate to reply to the forums.
Thanks!