IE7 resets homepage to MSN.com

This is a weird one. I recently installed Vista Home Premium on a fresh hard drive. I also installed MS Outlook 2007 and use that for email and IE7 for my browser. After a few days I noticed IE starting up to MSN.com instead of my normal homepage. When I reset it in the Internet Options menu, exit the menu and then go back in to check , I find it has automatically reset back to MSN. I can not make it save another website as a homepage.

I have run virus scans with Avast, ran Ad-Aware, Spybot S&D and Spyware Blaster but all have turned up nothing. I am stumped as to why this condition would occur suddenly, I have not installed any other 3rd party programs or Add-ons.

 

Thanks Pete! Not sure what happened but I was able to over ride the default page through SpywareBlaster's Tools menu. I don't know if SWB caused the problem in the first place but I was able to correct it. Thanks again!