I installed RC1 of Windows Server 2008 Enterprise x64 in a VM on ESX/VI 3.5, then cloned to a template. When trying to deploy from that template, the only option in the Customization wizard is "Do not customize", and some verbage about 'winLonghorn64Guest' is not supported in this configuration. Does the customization issue affect 2008 Server in general, or just the x64 version?
I have the same behavior with Windows 2008 standard Server 32 bit. We have the newest ESX3.5 with all Hotfixes and Patches installed and the VC is also at the newest release.
Hope that VMWare bring soon an update that also W2K8 is supported with this feature.