A new user cannot be 10.6.8
10.6.8 is an operating system that runs on your Mac.

Are you saying that you have a NEW computer which is running 10.6.8 and would like to move Entourage from the old to the new?

If that is not the case, then maybe this will help. On whatever computer you have MS Entourage installed, in the Documents folder you will find a MS folder that contains ALL your emails, addresses and identities.
For the move from one machine to another, install MS Entourage on the new machine and then move the MS folder from the documents folder on the old machine to the documents folder on the new machine.

if none of the above applies to your question, please respond with more details