I received few mails from users requesting HowTo on disabling unread message count from Welcome Screen.

To stop XP from displaying count of unread messages, Open registry and navigate to :

[HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\UnreadMail] and look for the data key "MessageExpiryDays". If you do not see this key, create one DWORD key by the name "MessageExpiryDays". Setting its value to 0 would stop Windows XP from displaying the count of unread mesages.