Do you have outlook on the system or not. I would have thought that it would have been installed with Office.
If you have existing e-mail accounts then Outlook may import them from OE on its own. If not then open OE and find the menu with Accounts on it. From there you will need to export any accounts you need. Then go into Outlook find the same Accounts screen and go Import. Then import all the *.iaf files that you exported from OE. You might have problems with OE wanting to be your default mail client though !