Adding a new profile requires Outlook 2000 to be configured for Corporate/Workgroup mail. Assuming you'll be getting mail from a corporate mail server (as opposed to another internet email account), do the following:
Open Outlook.
From the Tools menu, select Options.
Click on the Mail Services tab.
Click on the "Reconfigure E-mail Support" button at the bottom of the window.
Outlook will warn you that the change you are about to make will be in effect for all configurations. Click OK. Outlook will close automatically.
Right click on the desktop icon for Outlook 2000. A menu will appear. Select Properties....
Click on the "Show Profiles" button.
Click Add....
The rest is up to you to fill in the blanks (mail server, mailbox name, etc.)