Did you try rebooting a couple of times?
Also, try running the various repair functions in the WMUtil program:
http://www.oehelp.com/WMUtil
--
Gary VanderMolen, Microsoft MVP (Mail)
http://mvp.support.microsoft.com/def...le/vandermolen
"AMD" <> wrote in message news:9805B740-E413-4F34-8845-...
> Yesterday, I had a problem with my computer freezing. I restarted it, pulled
> up Windows Mail and all of the sudden the emails from the last month were
> gone. The left sidebar was changed also. I had folders set for emails from
> from certain companies which also disappeared. Does anyone have any idea how
> to get this back?