HTML5 Character Entity Reference Chart:
During start up or log on, once in a while, you'll see a message just saying Please wait. To turn this message into a more useful message, you can enable verbose messages through a policy setting (local or GP):
Either through gpedit.msc, or, if you're in a domain, through a GPO, navigate to Computer Configuration → Administrative Templates → System. Look for the setting Display highly detailed status messages and set it to Enabled. Reboot to apply the change.
The attached VBScript allows you to set an Out-of-Office reply for another user on an Exchange 2003. You'll need the required permissions on the Exchange server to set a user's out-of-office (either Mail Recipients or User Options Management roles).
I found the script in the comments section of this Technet blog article. Special thanks go to the author (Bill Prentice) for sharing.
This script is only for Exchange 2003. Starting from 2007, the Powershell cmdlet Set-MailboxAutoReplyConfiguration is available.