cant get emails from outlook 2000 on xp to migrate to outlook 2000 on vista

[dt29332]

I am trying to set up outlook 2000 on my new dell laptop w/ vista. My old PC (which I still have) has outlook 2000 running on xp. I exported a pst file from the xp machine but the vista machine wont recognize it. Here is the message I get from outlook:

properties for this information service must be defined prior to use

when I click OK, I then get this message:

the file backup.pst is not compatible with this version of the Personal Folders information service. Contact your admin

Im using the same version of Outlook on both machines (in fact the same copy of outlook).

What's going on?
BTW, it took forever to get outlook 2000 to even work on Vista. I had to set it to corporate mode to get it past the missing wab issue.