Issue froim Meeting Space, Windows Contacts and Windows Mail

I am currently using Windows Vista Ultimate edition. When I tried to start
Windows Meeting Space, I got the "Windows Meeting Space cannot start" message
prompt. When I checked with the troubleshooting guide, one of the item is to
check Windows Contacts. So when I open Windows Contact from the Start Menu,
nothing happen - no prompt, no error message, nothing. So I tried to open
Windows Mail and tried to see if I can get the contact list from there. When
I click on the Windows Mail, I got "Contacts failed to load" prompt, follow
by "Windows Mail could not be started. The application was unable to
initialize the Windows Contacts. Your computer may be out of memory or your
disk is full. (0x8004104E)" and then "Windows Mail could not be started
because MSOE.DLL could not be initialized."

I check the event viewer and only found these two event assoiciated with the
WinMail when I ran Windows Mail:

WinMail (2416) WindowsMail0: The database engine (6.00.6000.0000) started a
new instance (0).

WinMail (2416) WindowsMail0: The database engine stopped the instance (0).

Does anyone else have the same issue? Anyone can help me solve this problem?