cdo.message is not getting sent when the .send is used   

I am trying to create a simple vbscript that sends an email.  My code has the 
following format:

     Set objEmail = CreateObject("CDO.Message")
     objEmail.From = "From address"
     objEmail.To = "To address"
     objEmail.CC = "CC address"
     objEmail.Subject = "Subject"
     Textbody = "Text body"
     objEmail.Send
     wscript.echo "Message Sent"

When I run the script it works correctly.  When someone from our Help Desk 
tries to run it, they see the "Message Sent" message, but the email doesn't 
get delivered.  It just seems to die.  We are both running Outlook 2007 with 
Exchange 2003.  I assume that there are some other permissions issues that I 
am missing.  Can anyone help??

Thanks in advance,
Mike

date: Mon, 18 Aug 2008 10:38:01 -0700   author:   Midwest Muskie