Enabling Virtualization within an OS running as guest

[Moris]

Hi there,
First, the general question and then will drill down details if this post comes to have any replies, my previous one was a bit more detailed and there were zero replies... Not that I'm complaining, lol

Anyway, I have Oracle Virtualbox installed on Windows 7 on an HP G61 laptop and running CentOS on it. The machine has an AMD processor. Now, I want to install the Intel compiler (icc in short) on the Linux virtual box and it seems to be issues with the installation, I think it's due to the fact that the installer does not like AMD. I downloaded the same version for the host OS, Windows 7 just to see if there was a real impediment since no where on the Intel website I could find anything saying that the compiler cannot be installed on a non-Intel machine, all it says is that performance reporting or something are disabled which I am OK with it for now, but I was actually able to install it on the W7 host machine, and run.
But it seems to be a little trickier under CentOS.
Anyway, So what I attempted next was to install the processor emulator QEMU under CentOS to see if that would work, but I hit a wall when the pre-check tasks did not see my processor as virtualized enabled when running the command to do so. Since I am running Virtualbox already on W7 I thought it was not an issue with my hardware, still I checked on the system BIOS and lo and behold, there was virtualization enabled.

So now, I don't know if I can actually use QEMU (I actually downloaded KVM and QEMU and the verification process was part of the KVM pre-checks) as an emulator within a guest OS such as CenTOS.

I know, I may need to provide releases and versions and perhaps a bit more for better help but for starters the big question is: Is it possible to enable Virtualization when the guest OS is CentOS running on Windows 7?

Thank you very much, in advance, for any suggestions you may provide.
Moris

[Perryg]

Nested virtualization is not supported. You may get something to work if it does not require VMX but it is still not supported.

[Moris]

Ok, Thank you Perryg, short and simple, so I guess and for now, I'll quit trying and move to something else.