CrossFire with 8800GT

[Bantu]

Hi All.
I have a question for some time is it possible to mount a crossfire on my motherboard, using my 8800GT, as the second card gr.

I come across articles, or we show the possibility of setting up a SLI with two different cards grams, for example, a HD4870X2 and a GTX260.
Apparently this type of assembly, is only possible in Windows Vista e 7.

So I want to know is it possible to mount a CrossFire HD4850 using a port on the 16X and the 8800GT on the second port.
My motherboard is a Gigabyte GA-MA78G-DS3H and I'm on Vista.It is possible to bridge?

Thanks for all of those who helps!!

[Arkad]

Then I think it is totally impossible, where you saw that it was feasible?

[Bantu]

You can have look at it below for the real problem, fortunately i was able to take a screen shot of it.

[Zane]

Then the super strange

but against it on the X58 chipset that supports both SLI and Crossfire. You have it on your motherboard?