For running ESXi 4.x I believe you'll be SOL... Without the VT-x in the processor, you won't be able to use the current release of ESX/ESXi... You could install 3.5 onto it, but you won't get any of the improvements since that release (of which there are many). A flag goes up when you stated "32-bit copy of Windows Vista, because my CPU is 64-bit but won't support 64 bit guest OSes"... ESX/ESXi 4.x requires being able to run 64 bit OS's since it IS a 64 bit OS. The Q8400 processor would have better luck, as would the Q6600 processor (both have VT-x in them).
You should be able to run VMware Workstation on the system though (don't know if you'll be able to run any 64 bit VM's though)...
BTW, VT-x IS critical to use the 4.x releases of ESX/ESXi (as well as future releases)...
I would suggest going for a Linux OS for the computer, then install either VMware Workstation, or the free VMware Server product so that you can run VM's of Windows as guests...
I am curious to know what your second system is, that you would have used to connect to the VM you would have run in ESXi/vSphere?? You do realize that you cannot get into the guest OS on an ESX/ESXi host server, correct? Unlike with VMware Workstation, Player, Fusion, and Server...
Network Administrator
VMware VCP4
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