In vmware workstation 8, when you boot a machine you see the error This Virtual Machine Is Configured For 64-bit Guest Operating Systems.However 64-Bit Operation Is Not Possible.This is becasue VT is not enabled. Here is the solution
An easy to follow step by step guide on exporting a virtual machine from esxi 5 or vcenter to vmware workstation 8. Also a video guide is avaialble.