using Outlook 97 with Exchange 2000

My company intend to rollout out all our servers to W2k including exchange the desktops will stay as a mix of W95, 98, NT4 & W2k.
They wish to stay with the Outlook 97 version which comes with Office 97.
I personally think the minimum should be Outlook 98.
Can any one provide me with known issues / complications with Outlook 97 (pros / cons)” I remember something about upgrading to ver: 8.03 for exchange 5.5″!
Additionally what differences are better with the 98 version. How does exchange 2000 handle either version?
Many thanks in advance. Bob W-T