Original title: Cox has told me that my Windows Live Mail is corrupted !

I am having a problem with my Windows Live Mail.  When I look for replies to "some" emails that I have sent.... there are none.  And these people are all on my contact list and they have been sent a message from my Windows Live Mail.  But if I go online to my Cox Webmail the emails are there!  Although most of my emails are forwarded to my Live account........... not all of them are always there.  So I contacted Cox and they told me that my Windows Live was corrupted.  I have no idea what to do!  If I un-install Windows Live and re-install it will I lose everything?  All of my groups and contacts and such?  And will that even correct the corruption?  I have the Cox Webmail configured to forward all of my emails to my Windows Live but not all of them ever get there.  Please tell me what to do.  I am missing important emails every day! Thank you! Cyndi