Here's the scenario, for all you technogeektypes out there:
A client of mine just acquired a new server running Windows 2003 Small Business Edition.
A machine networked to the server is running Windows 2000, with Outlook 2003 as the email client.
Now...here's the problem...for some reason, whenever the machine is rebooted the default email is set to the Microsoft Exchange Server email, which isn't even being used, rather than the client's POP3 email account. The client has to change this every single time, and if Outlook is closed and then reopened, the change sticks. It just doesn't on reboot.