Does Studio 540 support XP virtualization (with Windows 7)?

About 6 months ago I purchased a Studio 540 Desktop.  It came with Vista.  The CPU is an Intel Core2 Quad Q8200.

I would like to upgrade to Windows 7 Professional so that I can use XP Virtualization.  I have verified that my CPU does NOT support virtualization technology.  However, the Intel Q9400 does support virtualization and from everything I can gather is a suitable replacement for the Q8200.  (There are current configuration options for purchasing a Studio 540 that include a Q9400.  Had I known back then about this problem, I would have delayed purchase or chosen a different CPU.)

I have also examined my BIOS settings but found there is no option for enabling virtualization.

I have several questions that I asked Dell but got three different answers and none of them answered the question I asked.

I asked what I would need to do to get virtualization on my machine.  Answer 1 from Dell was that I needed to upgrade the graphics card.  (The graphics card?  Really?)  Answer 2 was that the Q9400 is a suitable replacement but that I needed to check my BIOS.  I was not at my machine at the time and was unable to validate that I do NOT have an option to enable virtualization.  Answer 3 was that CPU replacement was not recommended (even though the Dell Studio 540 Server Manual provides instructions for how to do it).

Assuming I replace the Q8200 with a Q9400, how will I be able to enable the virtualization on the new CPU since it is not an available option in the BIOS?  Is the BIOS specific to a chip or to a motherboard?  Do I need to flash a new BIOS?  Is it even an option with the Studio 540 BIOS?

I can't get a straight answer from Dell on whether or not virtualization is supported on a Studio 540.

Does anyone have a Studio 540 desktop that is running Windows 7 and successfully using XP virtualization?