IE7 corrupt help??

Hi, Is it possible to fix an IE7 corrupt install? My MSN page won't display My HOTMAIL messages it says service currently unavailable? But I can access it directly via link.
Any suggestions or Ideas ?
Thanks,
HammerHeadHank

Here is a link for fixing, finding or repairing many issues with pages not loading right.
http://support.microsoft.com/kb/326155


Section 3, part 4 and below, may be of the most use to you.
Register Internet Explorer DLL