Migration to Zimbra 5

[yusufu]

OK,
this is real urgent. I'm running
Release 4.5.10_GA_1575.RHEL5_20071117121632 CentOS5 FOSS edition.
The thing now is that I want to upgrade to Zimbra 5 for obvious reasons.
Can someone please tell me what the requirements and procedure are.
I have already tested installing Zimbra 5 on a fresh system and it seems to be running fine despite the low system specs.
I really need something to work on in the next hour.

Sorry, the subject should read Upgrade To Zimbra 5

[uxbod]

Have a read of the Release Notes for 5.0.5 as it will explain the upgrade process. As always though remember to take a BACKUP

[Bill Brock]

Since my upgrade to 5.0.5 HTML e-mail will not render. I suggest 5.0.4 and wait on 5.0.6 where the bug has been fixed.