Hi,
Need more infromation:
Are getting the bing page before you sign in to MSN? If yes,
Open MSN but do not sign in, then on the welcome screen uncheck "Quick Web Access".
If it is your home page after you sign in to MSN then
Optimize Internet Explorer using the link below:
http://support.microsoft.com/kb/936213
1)Sign in to MSN
2)Click on Help and Settings-- Settings--Set the home page, Enter the webpage you want to be your homepage.
Hope this helps.
Thanks,
Satjot