Thanks for mentioning and reviving that thread, Gary, and thanks to bfroemel from the VMWare forum for the solution.
I've successfully enabled VT on my VAIO SZ by simply changing a value, and never encountered any "show-killers" explained in bfroemel's post after doing so. Only when I changed every 0 value to 1 did I receive that red prompt, but nothing drastic ever happened when I selected "yes". As bfroemel mentioned before, any changes to the NVRAM can be reset back to default from either the BIOS or the symcmos utility, so if you take the time, it's somewhat easy to filter out the important registers. I've tested this method on the R0094N0, R0096N0, and R0112N0 BIOSes and they all seem to have essentially the same byte pattern, so maybe it will also be similar on other VAIO model BIOSes.
I also managed to find the registers that affected other unaccessible settings. Most notable are the ability to enable AHCI support for the SATA hard drive and Hyper Threading support (even though Core Duos and Core 2 Duos don't utilize it), and disable the appearance of the VAIO/Phoenix BIOS picture or animation during POST and the NX bit. I received a STOP 0x0000007B BSOD while changing a few values, which indicated that I enabled AHCI mode, and in order to get past it, I had to install the Intel AHCI drivers to my existing Windows XP installation. Unfortunately, I wasn't able to make the Debug Intel Menu appear or change the memory frequency with this method.
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Note that my Yonah CPU does not support EM64T, which is why I'm getting the "This Core does not support long mode" message.
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Re: Intel Virtualization Technology
